HOME

TheInfoList



OR:

There is a lack of consensus on how to define a mass shooting. Most terms define a minimum of three or four victims of gun violence (not including the shooter or in an inner city) in a short period of time, although an Australian study from 2006 required a minimum of five; and added a requirement that the victims actually died as opposed to being shot and injured but not necessarily killed. In the United States, the ''Investigative Assistance for Violent Crimes Act of 2012'' defines mass killings as three or more killings in a single incident, however the Act does not define mass shootings. Media outlets such as CNN and some crime violence research groups such as the Gun Violence Archive define mass shootings as involving "two or more shot (injured or killed) in a single incident, at the same general time and location, not including the shooter". Mother Jones defines mass shootings as indiscriminate rampages killing three or more people, excluding the perpetrator; this definition doesn't include gang violence or armed robbery. Sometimes shootings involving three or more victims occur in non-public situations such as when one member of a family shoots all the other members in the family home. These killings are known as
familicide A familicide is a type of murder or murder-suicide in which one kills multiple close family members in quick succession, most often children, spouses, siblings, or parents. In half the cases, the killer lastly kills themselves in a murder-sui ...
s and are not included in mass shooting statistics. The motive for mass shootings (that occur in public locations) is usually that they are committed by deeply disgruntled individuals who are seeking revenge for failures in school, career, romance, or life in general or who are seeking fame or attention with at least 16 mass shooters since Columbine citing fame or notoriety as a motive. Fame seekers average more than double the body counts, and many articulated a desire to surpass "past records". If multiple people are shot in a robbery or killed in a group's terrorist attack, that type of violence is usually not included under the definition of mass shootings. "There is no broadly agreed-to, specific conceptualization of this issue, so this report uses its own definition for public mass shootings."


Definitions

There are a variety of definitions of mass shooting: * A crowdsourced data site cited by CNN, MSNBC, '' The New York Times'', '' The Washington Post'', '' The Economist'', the BBC, etc., Mass Shooting Tracker, defines a mass shooting as any incident in which four or more people are shot, whether injured or killed. Cites Mass Shooting Tracker * CBS defines that a mass shooting is an event involving the shooting (not necessarily resulting in death) of five or more people (sometimes four) with no cooling-off period. * Mother Jones defines a mass shooting as an indiscriminate rampage in a public place, resulting in three or more victims killed by the attacker, excluding gang violence, armed robbery, and attacks by unidentified perpetrators. * Crime violence research group Gun Violence Archive, whose research is used by major American media outlets, defines mass shooting as having a "minimum of four victims shot, either injured or killed, not including any shooter who may also have been killed or injured in the incident," differentiating between mass shooting and mass murder and not counting shooters as victims. *Though there are several different definitions of a mass shooting, there are also certain inclusions and exclusions. University of Pennsylvania says no matter how many people are killed, if a shooting occurs by a foreign terrorist that is not included. Another exclusion is if 10 people are shot but only 2 die. Also if 5 people are run over by a car that does not count because no firearm was used. Some inclusions are multiple deaths caused by an armed robbery. Deaths as a result of
gang war Film * ''Gang War (1928 film)'', an American film about gangsters * ''Gang War (1940 film)'', a Million Dollar Productions film * ''Gang War'', an alternative name for ''Paper Bullets'', a 1941 American film * ''Gang War'' (1958 film) a 1958 Ameri ...
s are also sometimes included. There are also differing definitions of the term mass killing: * Under U.S. federal law, the
Attorney General In most common law jurisdictions, the attorney general or attorney-general (sometimes abbreviated AG or Atty.-Gen) is the main legal advisor to the government. The plural is attorneys general. In some jurisdictions, attorneys general also have exec ...
– on a request from a state – may assist in investigating "mass killings", rather than mass shootings. The term is defined as the murder of four or more people with no cooling-off period but redefined by Congress in 2013 as being murder of three or more people. * In "Behind the Bloodshed", a report by '' USA Today'', a mass killing is defined as: any incident in which four or more were killed, including familial killings. This definition is also used by the Washington Post. * According to the Investigative Assistance for Violent Crimes Act of 2012, signed into law in January 2013, a mass killing is defined as a killing with at least three deaths, excluding the perpetrator. The lack of a single definition can lead to alarmism in the news media, with some reports conflating categories of different crimes. An act of mass shooting is typically defined as terrorist when it "appears to have been intended" to intimidate or to coerce people; although a mass shooting is not, in itself, an act of terrorism.


By continent and region


Africa

Mass shootings have occurred on the African continent, including the 1927 shooting in South Africa perpetrated by
Stephanus Swart Stephanus Andries Johannes Swart (21 July 1888 – 6 May 1927) was a South African farmer and one of the first spree killers who killed at least 8 people and wounded 3 others in Charlestown, South Africa on 6 May 1927, before killing himself. ...
, the 2016 Grand Bassam attack in Côte d'Ivoire/Ivory Coast, and the 1994 Kampala wedding massacre in Kampala, Uganda. Whilst incidents of mass violence resulting from terrorism and ethnic conflict have occurred on the continent, "mass shootings" as generally understood are rare in Africa.


Egypt

Various shootings include both the 1997 Luxor massacre and the 2013 Meet al-Attar shooting in Egypt.


Kenya

On 2 April 2015, armed terrorists stormed a public university in the North Eastern part of the country and killed 148 people.


Asia

Several mass shootings have occurred in Asia, including the 1878 Hyderabad shooting and 1983 Pashupatinath Temple shooting in India, the 1938 Tsuyama massacre in
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
, the 1948
Babrra massacre The Babrra Massacre (or Babara Massacre; ps, د بابړې خونړۍ پېښه) was a mass shooting on 12 August 1948 in the North-West Frontier Province (NWFP) of Pakistan (now called as Khyber Pakhtunkhwa) . According to official figures, aro ...
in Pakistan, the 2014 Peshawar school massacre killing 149 people, the 1993
Chongqing shooting The Chongqing shooting was a mass shooting that occurred in Chongqing, China on 5 April 1993. Chen Xuerong, a worker at the Chongqing machine factory, who was angered by a mistake on his timesheet, armed himself with a hunting rifle A rifle ...
and the 1994 Tian Mingjian incident in
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
, as well as the 2001 Nepalese royal massacre.


India

The Jallianwala Bagh massacre took place on 13 April 1919, when an estimated 379-1500 Indian protesters were killed by the British Army, and an additional 1,200 were injured


South Korea

Mass shootings are extremely rare in South Korea. The deadliest mass shooting was committed by
Woo Bum-kon Woo Bum-kon (or Wou Bom-kon, February 24, 1955 – April 27, 1982) was a South Korean policeman and spree killer who murdered between 56 and 62 people and wounded 33 others in several villages in Uiryeong County, South Gyeongsang Province, ...
in 1982, leaving 56 dead. For many years, it was the deadliest mass shooting in modern history, until the
2011 Norway attacks The 2011 Norway attacks, referred to in Norway as 22 July ( no, 22. juli) or as 22/7, were two domestic terrorist attacks by neo-Nazi Anders Behring Breivik against the government, the civilian population, and a Workers' Youth League (AUF) ...
surpassed it.


Japan

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
has as few as 2 gun-related homicides per year. These numbers include all homicides in the country, not just mass shootings. Japan has had several mass shootings, including the Tsuyama massacre,
2007 Sasebo shooting On 14 December 2007, a gunman opened fire in a gym in Sasebo, Nagasaki Prefecture, Japan, killing two people and wounding six others, among them two children. 37-year-old Masayoshi Magome, the shooter, was found dead in a nearby Catholic church ...
, and the
2010 Habikino shooting The 2010 Habikino shooting was a deadly Spree killer, spree shooting which occurred at a drinking establishment located just south of Eganoshō Station in Habikino, Osaka, Habikino, Osaka Prefecture, Japan on 12 January 2010. The attack was carr ...
.


Israel

Notable mass shootings in Israel, include the 1972 Lod Airport Massacre, which killed 26 and injured 80, the 2002
Bat Mitzvah massacre On Thursday, January 17, 2002 a Palestinian gunman, 24-year-old Abdul Salaam Sadek Hassouneh, killed six people and wounded 33 at a bat mitzvah celebration in Hadera, Israel.
in Hadera,
Mercaz HaRav Massacre The 2008 Jerusalem yeshiva attack was a mass shooting attack that occurred on 6 March 2008, in which a lone Palestinian gunman shot multiple students at the Mercaz HaRav yeshiva, a religious school in Jerusalem, after which the gunman himself w ...
in 2008, the
2014 Jerusalem synagogue attack On the morning of 18 November 2014, two Palestinian men from Jerusalem entered Kehilat Bnei Torah synagogue, in the Har Nof neighborhood of Jerusalem, and attacked the praying congregants with axes, knives, and a gun. They killed four dual-nati ...
in Jerusalem and the
June 2016 Tel Aviv shooting The June 2016 Tel Aviv shooting, which occurred on 8 June 2016 in Tel Aviv, Israel, was a terrorist attack in which two Palestinian gunmen opened fire on patrons at the Max Brenner Cafe in the Sarona Market, killing four people and injuring ...
at the popular Sarona centre complex in Tel Aviv. There have been two mass shootings by Jews in Israel.
Ami Popper Ami Popper ( he, עמי פופר; born June 2, 1969) is an Israeli mass murderer, convicted for the killing of 7 people in Rishon Lezion on May 20, 1990. Known as the Oyoun Qara massacre to Palestinians, for unknown reasons Popper killed and wound ...
was convicted of murdering seven Palestinian men in a mass shooting carried out in 1990. In 1994, terrorist
Baruch Goldstein Baruch Kopel Goldstein ( he, ברוך קופל גולדשטיין; born Benjamin Carl Goldstein; December 9, 1956 – February 25, 1994) was an Israeli-American mass murderer, religious extremist, and physician who perpetrated the 1994 terrorist ...
murdered 29 Muslims and injured a further 125 in Hebron during the Cave of the Patriarchs massacre.


Thailand

A mass shooting occurred near and in Nakhon Ratchasima, Thailand, colloquially known as Korat, between 8 and 9 February 2020. A soldier of the Royal Thai Police killed 30 people and wounded 58 others before he was eventually shot and killed. On October 6, 2022, 38 people, 24 of which were children, were killed in a shooting and stabbing spree by former police officer Panya Kamrab. The main target was a Child Care Centre in Nong Bua Lambhu Province. The perpetrator then killed both his wife and son at his own home.


Europe

There have been many mass shootings in Europe. Recent examples include the 1987 Hungerford massacre, the 1996 Dunblane massacre, the 2010
Cumbria shootings The Cumbria shootings was a shooting spree which occurred on 2 June 2010 when a lone gunman, taxi driver Derrick Bird, killed twelve people and injured eleven others in Cumbria, England, United Kingdom. Along with the 1987 Hungerford massacre a ...
and the 2021
Plymouth shooting The Plymouth shooting occurred in Keyham, Plymouth, Devon, England, United Kingdom, on 12 August 2021. The gunman, 22-year-old Jake Davison, shot and killed five people and injured two others before fatally shooting himself. Devon and Cornwall ...
in the United Kingdom; the 1990
Puerto Hurraco massacre The Puerto Hurraco massacre was a mass murder that occurred on the afternoon of Sunday, 26 August 1990 in Puerto Hurraco, a village in Benquerencia de la Serena, municipality in the Province of Badajoz, ( Extremadura, Spain). It has 135 inhabitan ...
in Spain; the 2001
Zug massacre The Zug massacre took place on 27 September 2001 in the city of Zug (Canton of Zug, Switzerland) in the canton's parliament. Friedrich Leibacher shot dead 14 people before killing himself. In the years before the massacre, Leibacher drew atte ...
in
Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
; the 2002
Erfurt school massacre The Erfurt massacre was a school shooting that occurred on 26 April 2002 at the Gutenberg-Gymnasium, a secondary school in Erfurt, Germany. 19-year-old expelled student Robert Steinhäuser shot and killed 16 people, including 13 staff members, ...
, the 2009
Winnenden school shooting The Winnenden school shooting occurred on the morning of 11 March 2009 at the Albertville-Realschule, a secondary school in Winnenden, southwestern Germany, followed by a shootout at a car dealership in nearby Wendlingen. The shooting spree resu ...
, the
2011 Frankfurt Airport shooting The 2011 Frankfurt Airport shooting occurred on 2 March 2011 at Frankfurt Airport in Germany. The shooter, Arid Uka, was arrested and charged with killing two United States Airmen and seriously wounding two others. He was convicted of murder and ...
, the
2016 Munich shooting On 22 July 2016, there was a mass shooting in the vicinity of the Olympia shopping mall in the Moosach district of Munich, Germany. An 18-year-old Iranian-German, David Sonboly, opened fire on fellow teenagers at a McDonald's restaurant before ...
, and the 2020 Hanau shootings in Germany; the
2020 Vienna attack The 2020 Vienna attack was a series of shootings that occurred on 2 November 2020 in Vienna, Austria. A few hours before the city was to enter a lockdown due to the COVID-19 pandemic, a lone gunman started shooting in the busy city centre. Four c ...
in Austria; the 2007 Jokela school shooting and the 2008 Kauhajoki school shooting in Finland; the
2010 Bratislava shooting The 2010 Bratislava shooting, or the Devínska Nová Ves shooting, occurred on 30 August 2010, when eight people were killed and 17 others injured by a lone gunman who opened fire in Devínska Nová Ves district in a suburb of the Slovak capita ...
in Slovakia; the 2011
Alphen aan den Rijn shopping mall shooting On 9 April 2011, six people were killed by a gunman who entered the Ridderhof mall in Alphen aan den Rijn, Netherlands, a town approximately south-west of Amsterdam. Using a rifle, 24-year-old Tristan van der Vlis shot several people and then ...
and the Utrecht tram shooting in The Netherlands; the 2012 Toulouse and Montauban shootings, the January 2015 Île-de-France attacks, the
November 2015 Paris attacks The November 2015 Paris attacks () were a series of coordinated Islamist terrorist attacks that took place on Friday, 13 November 2015 in Paris, France, and the city's northern suburb, Saint-Denis. Beginning at 9:15p.m., three suicide bombers ...
and the
2022 Paris shooting On 23 December 2022, a mass shooting occurred at three Kurdish locations in the 10th arrondissement of Paris, France. Three people were killed, and three others were wounded in and around a Kurdish cultural center on Rue d'Enghien. Investigato ...
in France; the 2018
Macerata shooting On 3 February 2018, a right-wing terrorist shooting occurred in Macerata, Italy. It received widespread media coverage and affected Italian politics as it occurred during the political campaign for the 2018 Italian general election. Events On 3 ...
in Italy; the
February 2015 Copenhagen shootings On 14–15 February 2015, three separate shootings occurred in Copenhagen, Denmark. In total, two victims and the perpetrator were killed, while five police officers were wounded. The first shooting took place on 14 February at a small public after ...
the
2022 Copenhagen mall shooting On 3 July 2022, a man opened fire at the Field's shopping mall in Copenhagen, Denmark, killing three people and critically wounding four others. A suspect, a Danish man, was arrested after the shooting; he had a history of contact with the psych ...
in Denmark; and the
2022 Cetinje shooting On 12 August 2022, a spree shooting occurred in Cetinje, Montenegro. Ten people were killed, including two children, and six others were wounded. The gunman, identified as 33-year-old Vučko Borilović, was shot and killed after engaging in a gu ...
in Montenegro. The deadliest mass shooting by a lone individual in modern history occurred in Europe with the
2011 Norway attacks The 2011 Norway attacks, referred to in Norway as 22 July ( no, 22. juli) or as 22/7, were two domestic terrorist attacks by neo-Nazi Anders Behring Breivik against the government, the civilian population, and a Workers' Youth League (AUF) ...
in Norway, in which 77 people died. Of them 67 died of gunshot wounds. 8 other victims were killed by a bomb and 2 indirectly.


Soviet Union/Russia

Notable mass shootings that occurred in the Russian Empire, Soviet Union ( Russian Soviet Federative Socialist Republic) and Russia include the Pogroms in the Russian Empire,
1992 Tatarstan shooting The 1992 Tatarstan shooting was a mass murder which occurred in Tatarstan, Russia, on 26 April 1992. The perpetrator, Andrey Shpagonov, shot and killed 9 people and seriously injured another during a robbery attempting to steal firearms from hi ...
, the 2002
Yaroslavsky shooting The Yaroslavsky shooting was a mass murder that occurred in Yaroslavsky, Primorsky Krai, Russia on 25 August 2002, when 40-year-old police captain Sergey Semidovskiy () killed five people and wounded ten others in and outside a bar with a Saiga ...
, the 2002 Moscow theater hostage crisis, the
2012 Moscow shooting The 2012 Moscow shooting was an incident on 7 November 2012, in which six people were killed and one person injured by a lone gunman at a warehouse in northeast Moscow, Russia. The attack Five people were killed in a shooting spree in northeast ...
and the
2014 Moscow school shooting On February 3, 2014, 15-year-old high school student Sergey Gordeyev (russian: Сергей Гордеев; also spelled Sergei Gordeev) opened fire at School No. 263 in Otradnoye District, Moscow, Russia,Sukhov, Oleg and Matthew Bodner.First-E ...
, the 2004 Beslan school siege, the
2013 Belgorod shooting The 2013 Belgorod shooting was a mass murder that occurred on April 22, 2013, in Belgorod, Russia, where six people were killed. 31-year-old Sergey Pomazun shot three people at a gun store and three people on the street outside with a semi-autom ...
, the 2018 Kerch Polytechnic College massacre, the 2021
Kazan school shooting On 11 May 2021, a school shooting occurred in Kazan, Tatarstan, in the western part of Russia, and a bomb was detonated. Nine people (seven 8th-grade students and two teachers) were murdered, and 23 others were injured. The 19-year-old shoote ...
, the 2021
Perm State University shooting On 20 September 2021, a mass shooting occurred at Perm State University, in the city of Perm, Perm Krai, Russia. Six people were killed and 47 others were injured. The attacker, identified as 18-year-old Timur Bekmansurov, was arrested after ...
, and the 2022
Izhevsk school shooting On 26 September 2022, a mass shooting occurred at a school in Izhevsk, Udmurtia, in west-central Russia. Eighteen people were killed and 23 others were wounded before the gunman, identified as Artem Kazantsev, committed suicide. Events The mass ...
.


North America


Canada

Notable mass shootings in Canada include the 1989 École Polytechnique massacre (which led to stronger
gun control in Canada Firearms in Canada are federally regulated through the ''Firearms Act'' and related provisions of the '' Criminal Code''. Regulation is largely about licensing and registration of firearms, including air guns with a muzzle velocity of more than ...
), the 1992
Concordia University massacre The Concordia University massacre was a school shooting on August 24, 1992 in which Valery I. Fabrikant, an associate professor of mechanical engineering, killed four colleagues and wounded a staff member at Concordia University in Montreal, Qu ...
, the 2006 Dawson College shooting in Montreal, the 2012
Danzig Street shooting The Danzig Street shooting, or Danzig shooting, was a gang-related shooting that occurred on the evening of 16July 2012 at a block party on Danzig Street in the West Hill, Toronto, West Hill neighbourhood of Toronto, Canada. Rival gang members ...
, the 2014
Edmonton shooting On December 29, 2014, 53-year-old Phu Lam went on a killing spree in Edmonton, Alberta, Canada. He shot to death eight people, including two children, most of whom were his relatives. He then committed suicide at a Vietnamese/Chinese restaurant, V ...
in Edmonton, the
2017 Quebec City mosque shooting The Quebec City mosque shooting (french: Attentat de la grande mosquée de Québec) was an attack by a single gunman on the evening of January 29, 2017, at the Islamic Cultural Centre of Quebec City, a mosque in the Sainte-Foy neighbourhood ...
in Quebec City, the
2018 Toronto shooting The 2018 Toronto shooting, known locally as the Danforth shooting, was a mass shooting that occurred on Danforth Avenue in the Greektown neighbourhood of Toronto, Ontario, Canada on the night of July 22, 2018. Faisal Hussain killed two people and ...
, and the
2020 Nova Scotia attacks On April 18 and 19, 2020, Gabriel Wortman committed multiple shootings and set fires at 16 locations in the Canadian province of Nova Scotia, killing 22 people and injuring three others before he was shot and killed by the Royal Canadian Mo ...
. Following the attacks in Nova Scotia, collectively considered to be the deadliest mass shooting in Canadian history, Prime Minister Justin Trudeau banned the use, sale, purchase, and import of AR-15s – the semi-automatic rifle used in the shooting and many other shootings in the US.


Mexico

Notable mass shootings in Mexico include the
2010 Chihuahua shootings On June 10, 2010, at least 19 people were killed in the Mexican state of Chihuahua in shooting attacks due to an ongoing drug war. The attack was on a drug rehabilitation clinic in the state capital Chihuahua. Four other people were wounded. ...
in
Chihuahua Chihuahua may refer to: Places *Chihuahua (state), a Mexican state **Chihuahua (dog), a breed of dog named after the state **Chihuahua cheese, a type of cheese originating in the state **Chihuahua City, the capital city of the state **Chihuahua Mun ...
.


United States

The United States has had the most mass shootings of any country. In a 2016 study published by criminologist Adam Lankford, it was estimated that 31% of all public mass shooters from 1966 to 2012 attacked in the United States, although the U.S. had less than 5% of the world's population. The study concludes that "The United States and other nations with high firearm ownership rates may be particularly susceptible to future public mass shootings, even if they are relatively peaceful or mentally healthy according to other national indicators." Criminologist Gary Kleck criticized Lankford's findings, stating the study merely shows a proportional relationship, but fails to prove that gun ownership ''causes'' mass shootings. Backlash from economist and gun rights advocate
John Lott John Richard Lott Jr. (born May 8, 1958) is an American economist, political commentator, and gun rights advocate. Lott was formerly employed at various academic institutions and at the American Enterprise Institute conservative think tank. He ...
also raised objections to Lankford's methodology and refusal to share his data. He speculated that Lankford had overlooked a significant number of mass shootings outside the US, which if accounted for would adjust the nation's share closer to 2.88%; slightly below the world average. Lankford has since followed up on his research, publishing his data and clarifying that the United States from 1998 to 2012 did in fact have more than six times its global share of public mass shooters who attacked alone, which is almost always the case with mass shooters. Using the data from Lott and Moody's 2019 study of mass shootings, Lankford explains that "41 of all 138 public mass shootings by single perpetrators worldwide were committed in the United States. That represents 29.7%. Because America had in those years approximately 4.5% of the world's population (according to Lott and Moody's calculations), this indicates that based on their own data, the United States had more than six times its global share of public mass shooters who attacked alone (29.7/4.5 = 6.6). In a subsequent study, Lankford criticized Lott and Moody for including "attacks by terrorist organizations, genocidal militias, armed rebel groups, and paramilitary fighters" in their data and suggested they "misrepresent approximately 1,000 foreign cases from their own dataset" in other ways. Mass shootings have also been observed to be followed by an increase in the purchase of weapons, but does not seem to create an increased feeling of needing guns in either gun owners or non-owners. Despite the fact that the global COVID-19 pandemic reduced public gatherings from March 2020 onward, the number of mass shootings increased significantly over that period. It "even doubled in July 2020 compared to a year earlier". The
2022 Buffalo shooting On May 14, 2022, a mass shooting occurred in Buffalo, New York, United States, at a Tops Friendly Markets supermarket in the East Side neighborhood. Ten people, all of whom were Black, were murdered and three were injured. The shooter, identif ...
perpetrator said he was radicalized during the COVID-19 pandemic, and used the r/MassKillers subreddit for advice on how to commit his attack.


South America


Argentina

Notable mass shootings in Argentina include the 2004
Carmen de Patagones school shooting The Carmen de Patagones school shooting occurred on 28 September 2004 at the "Islas Malvinas" Institute in Carmen de Patagones, Buenos Aires Province, Argentina. Rafael Solich, 15, killed three fellow students and wounded five more. Background So ...
in Carmen de Patagones.


Brazil

Notable mass shootings in Brazil include the 2011
Realengo massacre On the morning of Thursday, 7 April 2011, a World Health Day, 12 children aged between 12 and 14 were killed and 22 others seriously wounded by Wellington Menezes de Oliveira, who entered the Tasso da Silveira Municipal School (''Escola Municipal ...
in Rio de Janeiro and the
Suzano school shooting The Suzano school shooting, also known as the Suzano massacre, was a school shooting that took place on March 13, 2019, at the Professor Raul Brasil State School in the Brazilian municipality of Suzano, São Paulo State. The perpetrators, 17-yea ...
in Suzano.


Oceania


Australia

Notable mass shootings in Australia include the 1987
Hoddle Street massacre The Hoddle Street massacre was a mass shooting that occurred on the evening of Sunday, 9 August 1987, in Hoddle Street, Clifton Hill, a suburb of Melbourne, Victoria, in Australia. The shootings resulted in the deaths of seven people, and seri ...
in
Hoddle Street Hoddle Highway is an urban highway in Melbourne linking CityLink and the Eastern Freeway, itself a sub-section of Hoddle Main Road. Both these names are not widely known to most drivers, as the entire allocation is still best known as by the n ...
, Clifton Hill, Melbourne; and the 1996
Port Arthur massacre Port Arthur massacre may refer to: *Port Arthur massacre (China), an 1894 event in which Japanese troops killed several thousand Chinese in the Liaodong Peninsula *Port Arthur massacre (Australia) The Port Arthur massacre was a mass shooting t ...
in Port Arthur, Tasmania. There were 13 mass shootings with five or more deaths between 1979 and 1996, and three mass shootings involving four or more deaths have occurred since the introduction of new gun laws following the Port Arthur incident.


New Zealand

Notable mass shootings in New Zealand include the 1990 Aramoana massacre in which 14 people were killed (including the perpetrator) in Aramoana and the 2019 Christchurch mosque shootings in Christchurch, which resulted in 51 deaths and is the largest mass shooting in New Zealand history.


Victims and survivors

After mass shootings, some survivors have written about their experiences and their experiences have been covered by journalists. A survivor of the
Knoxville Unitarian Universalist church shooting The Tennessee Valley Unitarian Universalist Church Shooting was a mass shooting that occurred on July 27, 2008 when an unemployed Tennessee truck driver named Jim David Adkisson went on a shooting rampage at the Tennessee Valley Unitarian Unive ...
wrote about his reaction to other mass shooting incidents. The father of a victim in a mass shooting at a movie theater in Aurora, Colorado, wrote about witnessing other mass shootings after the loss of his son. The survivors of the
2011 Norway attacks The 2011 Norway attacks, referred to in Norway as 22 July ( no, 22. juli) or as 22/7, were two domestic terrorist attacks by neo-Nazi Anders Behring Breivik against the government, the civilian population, and a Workers' Youth League (AUF) ...
recounted their experience to '' GQ'' magazine. In addition, one paper studied Swedish police officers' reactions to a mass shooting. Survivors of mass shootings can suffer from Post-traumatic stress disorder.


Perpetrators


Sex and ethnicity


United States

The overwhelming majority of mass shooters in the U.S. are male, with some sources showing males account for 98% of mass shooters. According to Sky News, male perpetrators committed 110 out of 114 school shootings (96%) in the period 1982–2019, compared to homicides in general in the United States, where 85.3% of homicides were committed by males. A study by Statista showed that 65 out of 116 (56%) U.S. mass shootings in a period from 1982 to 2019 involved "white" shooters. According to a database compiled by '' Mother Jones'' magazine, the race of the shooters is approximately proportionate to the overall U.S. population, although Asians are overrepresented and Latinos underrepresented.


Mental health and criminal records

In a study of 55 mass shooters from Mother Jones' mass shooting database, researchers found that 87.5% of perpetrators had misdiagnosed and incorrectly treated or undiagnosed and untreated psychiatric illness. According to a study by The Violence Project, 42% of all mass shooters experienced physical or sexual abuse, parental suicide, or were victims of bullying. They also found that 72% of perpetrators were suicidal. In a study of 171 mass shooters who attacked in the United States from 1966 to 2019, researchers Adam Lankford and Rebecca Cowan found that although the vast majority of people with mental illness are not violent, "almost all public mass shooters may have mental health problems." They suggest the frequency of mental health problems among mass shooters is sometimes underestimated because "many perpetrators have never been formally evaluated by a psychiatrist or mental health practitioner...and others deliberately avoid doctors, conceal their mental health problems, or lie about their symptoms due to shame, stigma, or fear of other consequences." However, Lankford and Cowan also emphasize that mental illness is not the sole cause of mass shootings and many other factors play an important role in perpetrators' decisions to attack. Criminologist James Allen Fox said that most mass murderers do not have a criminal record, or involuntary incarceration at a mental health centre, although an article in ''The New York Times'' in December 2015 about 15 recent mass shootings found that six perpetrators had had run-ins with law enforcement, and six had mental health issues.


Motives

Mass shootings can be motivated by religious extremism, political ideologies (e.g.,
neo-Nazism Neo-Nazism comprises the post–World War II militant, social, and political movements that seek to revive and reinstate Nazism, Nazi ideology. Neo-Nazis employ their ideology to promote hatred and Supremacism#Racial, racial supremacy (ofte ...
, terrorism, White supremacism), racism, sexual orientation, misogyny,
mental illness A mental disorder, also referred to as a mental illness or psychiatric disorder, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. Such features may be persistent, relapsing and remitti ...
, and extensive
bullying Bullying is the use of force, coercion, hurtful teasing or threat, to abuse, aggressively dominate or intimidate. The behavior is often repeated and habitual. One essential prerequisite is the perception (by the bully or by others) of an imba ...
, among other reasons. Forensic psychologist Stephen Ross cites extreme anger and the notion of working for a cause—rather than mental illness—as primary explanations. A study by Vanderbilt University researchers found that "fewer than 5% of the 120,000 gun-related killings in the United States between 2001 and 2010 were perpetrated by people diagnosed with mental illness." John Roman of the Urban Institute argues that, while better access to mental health care, restricting high powered weapons, and creating a defensive infrastructure to combat terrorism are constructive, they do not address the greater issue, which is "we have a lot of really angry young men in our country and in the world." Author
Dave Cullen Dave Cullen is an American journalist and non-fiction writer. Life Cullen graduated from the University of Illinois at Urbana–Champaign The University of Illinois Urbana-Champaign (U of I, Illinois, University of Illinois, or UIUC) is a ...
, in his 2009 book '' Columbine'' on the infamous 1999
Columbine High School massacre On April 20, 1999, a school shooting and attempted bombing occurred at Columbine High School in Columbine, Colorado, United States. The perpetrators, 12th grade students Eric Harris and Dylan Klebold, murdered 12 students and one teacher. ...
and its perpetrators
Eric Harris and Dylan Klebold Eric David Harris (April 9, 1981 – April 20, 1999) and Dylan Bennet Klebold (; September 11, 1981 – April 20, 1999) were an American mass murder duo who perpetrated the Columbine High School massacre on April 20, 1999. Harris and Klebold ...
, described Harris as an "injustice collector." He expanded on the concept in a 2015 ''
New Republic New Republic may refer to: Places * New Republic, California, former name of Santa Rita, Monterey County, California * New Republic (Santarem), district in the city of Santarém, Pará Countries * New Republic (Brazil), the restored civilian gove ...
'' essay on injustice collectors, identifying several notorious killers as fitting the category, including Christopher Dorner, Elliot Rodger,
Vester Flanagan On the morning of August 26, 2015, news reporter Alison Parker and photojournalist Adam Ward, both employees of CBS affiliate WDBJ in Roanoke, Virginia, United States, were fatally shot while conducting a live television interview near Smith Moun ...
, and
Andrew Kehoe Andrew Philip Kehoe (February 1, 1872 – May 18, 1927) was an American mass murderer. Kehoe was a Michigan farmer who became disgruntled after losing reelection as treasurer of the Bath Township school board. He subsequently murdered his wife ...
. Likewise, mass shooting expert and former FBI profiler Mary O'Toole also uses the phrase "injustice collector" in characterizing motives of some mass shooting perpetrators. In relation, criminologist James Alan Fox contends that mass murderers are "enabled by social isolation" and typically experience "years of disappointment and failure that produce a mix of profound hopelessness and deep-seated resentment." Jillian Peterson, an assistant professor of criminology at Hamline University who is participating in the construction of a database on mass shooters, noted that two phenomena surface repeatedly in the statistics: hopelessness and a need for notoriety in life or in death. Notoriety was first suggested as a possible motive and researched by Justin Nutt. Nutt stated in a 2013 article, "those who feel nameless and as though no one will care or remember them when they are gone may feel doing something such as a school shooting will make sure they are remembered and listed in the history books." In a 2019 op-ed for the Los Angeles Times, Jillian Peterson and
James Densley James Densley (born April 13, 1982) is a British-American sociologist and Professor of Criminal Justice at Metropolitan State University. He is best known as co-founder of The Violence Project and as co-author of the bestselling book, ''The Viol ...
of The Violence Project think tank presented a new, hopeful, framework to understand mass shootings. Based on a study funded by the
National Institute of Justice The National Institute of Justice (NIJ) is the research, development and evaluation agency of the United States Department of Justice. NIJ, along with the Bureau of Justice Statistics (BJS), Bureau of Justice Assistance (BJA), Office of Juvenil ...
, Peterson and Densley found mass shooters had four things in common: (1) early childhood trauma and exposure to violence at a young age; (2) an identifiable grievance or crisis point; (3) validation for their belief system, have studied past shootings to find inspiration; and (4) the means to carry out an attack. This new framework highlights the complexity of the pathway to a mass shooting, including how each one can be "socially contagious," but also provides a blueprint to prevent the next mass shooting. Each one of the four themes represents an opportunity for intervention. By reducing access to firearms (means), slowing contagion (validation), training in crisis intervention de-escalation (crisis), and increasing access to affordable mental healthcare (trauma), a mass shooting can be averted. In considering the frequency of mass shootings in the United States, criminologist Peter Squires says that the individualistic culture in the United States puts the country at greater risk for mass shootings than other countries, noting that "many other countries where gun ownership is high, such as Norway, Finland, Switzerland and Israel . . . tend to have more tight-knit societies where a strong social bond supports people through crises, and mass killings are fewer." He is an advocate of gun control, but contends there is more to mass shootings than the prevalence of guns. The Italian Marxist academic Franco Berardi argues that the hyper-individualism, social alienation and competitiveness fomented by
neoliberal Neoliberalism (also neo-liberalism) is a term used to signify the late 20th century political reappearance of 19th-century ideas associated with free-market capitalism after it fell into decline following the Second World War. A prominent fa ...
ideology and capitalism creates mass shooters by causing people to "malfunction."


Social science and family structure

A noteworthy connection has been reported in the U.S. between mass shootings and domestic or family violence, with a current or former intimate partner or family member killed in 76 of 133 cases (57%), and a perpetrator having previously been charged with domestic violence in 21. This analysis has later figures than reported in the article Moynihan said that "almost all school shooters come from families where the parents are either divorced or alienated," and Cook argued that "perhaps they wouldn't need more gun control if they had better divorce control."


Responses


Media

Some people have considered whether media attention revolving around the perpetrators of mass shootings is a factor in sparking further incidents. In response to this, some in law enforcement have decided against naming mass shooting suspects in media-related events to avoid giving them notoriety. The effects of messages used in the coverage of mass shootings has been studied. Researchers studied the role the coverage plays in shaping attitudes toward persons with serious mental illness and public support for
gun control Gun control, or firearms regulation, is the set of laws or policies that regulate the manufacture, sale, transfer, possession, modification, or use of firearms by civilians. Most countries have a restrictive firearm guiding policy, with on ...
policies. In 2015, a paper written by a physicist and statistician, Sherry Towers, along with four colleagues was published, which proved that there is indeed mass shooting contagion using mathematical modeling. However, in 2017, Towers said in an interview that she prefers
self-regulation Self-regulation may refer to: *Emotional self-regulation *Self-control, in sociology/psychology *Self-regulated learning, in educational psychology *Self-regulation theory (SRT), a system of conscious personal management *Industry self-regulation, ...
to censorship to address this issue, just like years ago major news outlets successfully prevent copycat suicide. In 2016, the American Psychological Association published a press release, claiming that mass shooting contagion does exist and news media and social media enthusiasts should withhold the name(s) and face(s) of the victimizer(s) when reporting a mass shooting to deny the fame the shooter(s) want to curb contagion. Some news media have weighed in on the gun control debate. After the
2015 San Bernardino attack On December 2, 2015, a terrorist attack, consisting of a mass shooting and an attempted bombing, occurred at the Inland Regional Center in San Bernardino, California. The perpetrators, Syed Rizwan Farook and Tashfeen Malik, a married couple ...
, the ''
New York Daily News The New York ''Daily News'', officially titled the ''Daily News'', is an American newspaper based in Jersey City, NJ. It was founded in 1919 by Joseph Medill Patterson as the ''Illustrated Daily News''. It was the first U.S. daily printed in ta ...
'' front-page headline "God isn't fixing this" was accompanied by "images of tweets from leading Republicans who shared their 'thoughts' and 'prayers' for the shooting victims." Since the
2014 Isla Vista killings The 2014 Isla Vista killings were a series of misogynistic terror attacks in Isla Vista, California. On the evening of May 23, 22-year-old Elliot Rodger killed six people and injured fourteen others—by gunshot, stabbing and vehicle ramm ...
, satirical news website '' The Onion'' has repeatedly republished the story " 'No Way To Prevent This,' Says Only Nation Where This Regularly Happens" with minor edits after major mass shootings, to satirise the popular consensus that there is a lack of political power in the United States to prevent mass shootings.


Gun law reform

Responses to mass shootings take a variety of forms, depending on the country and political climate.


Australia

After the 1996
Port Arthur massacre Port Arthur massacre may refer to: *Port Arthur massacre (China), an 1894 event in which Japanese troops killed several thousand Chinese in the Liaodong Peninsula *Port Arthur massacre (Australia) The Port Arthur massacre was a mass shooting t ...
,
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
changed its gun laws.


New Zealand

In the aftermath of the Christchurch mosque shootings, New Zealand announced a ban on almost all semiautomatic military-style weapons.


United Kingdom

As a result of the Hungerford massacre in Hungerford, England, and the Dunblane school massacre in
Stirling, Scotland Stirling (; sco, Stirlin; gd, Sruighlea ) is a City status in the United Kingdom, city in Central Belt, central Scotland, northeast of Glasgow and north-west of Edinburgh. The market town#Scotland, market town, surrounded by rich farmland, ...
, the United Kingdom enacted tough gun laws and a buyback program to remove specific classes of firearms from private ownership. They included the Firearms Amendment Act 1988, which limited rifles and shotguns; and the 1997 Firearms Amendment Acts, which restricted or made illegal many handguns. There have been two mass shootings since the laws were restricted: the
Cumbria shootings The Cumbria shootings was a shooting spree which occurred on 2 June 2010 when a lone gunman, taxi driver Derrick Bird, killed twelve people and injured eleven others in Cumbria, England, United Kingdom. Along with the 1987 Hungerford massacre a ...
in 2010, which killed 13 people, including the perpetrator; and the
Plymouth shooting The Plymouth shooting occurred in Keyham, Plymouth, Devon, England, United Kingdom, on 12 August 2021. The gunman, 22-year-old Jake Davison, shot and killed five people and injured two others before fatally shooting himself. Devon and Cornwall ...
in 2021, which killed six people, including the perpetrator.


United States

In the United States, support for gun law reform varies considerably by political party, with Democrats generally more supportive and Republicans generally more opposed. Some in the U.S. believe that tightening gun laws would prevent future mass shootings. Some politicians in the U.S. introduced legislation to reform the background check system for purchasing a gun. A vast majority of Americans support tighter background checks. "According to a poll by Quinnipiac University in Connecticut, 93 percent of registered voters said they would support universal background checks for all gun buyers." Others contend that mass shootings should not be the main focus in the gun law reform debate because these shootings account for less than one percent of the U.S. homicide rate and believe that these shootings are hard to stop. They often argue that civilians with concealed guns will be able to stop shootings. According to British criminologist Peter Squires, who has studied gun violence in different countries, mass shootings may be more due to the "individualistic culture" in the U.S. than its firearm laws.


Leaders

As of June 2016, U.S. President Barack Obama had spoken in the aftermath of fourteen mass shootings during his eight-year presidency, repeatedly calling for more gun safety laws in the United States. After the
Charleston church shooting On June 17, 2015, a mass shooting occurred in Charleston, South Carolina, in which nine African Americans were killed during a Bible study at the Emanuel African Methodist Episcopal Church. Among those people who were killed was the senior past ...
, Obama said, "At some point, we as a country will have to reckon with the fact that this type of mass violence does not happen in other advanced countries. It doesn't happen in other places with this kind of frequency." After the
2015 San Bernardino attack On December 2, 2015, a terrorist attack, consisting of a mass shooting and an attempted bombing, occurred at the Inland Regional Center in San Bernardino, California. The perpetrators, Syed Rizwan Farook and Tashfeen Malik, a married couple ...
, Obama renewed his call for reforming gun-safety laws and also said that the frequency of mass shootings in the United States has "no parallel in the world." After the
Stoneman Douglas High School shooting On February 14, 2018, 19-year-old Nikolas Cruz opened fire on students and staff at Marjory Stoneman Douglas High School in the Miami suburban town of Parkland, Florida, murdering 17 people and injuring 17 others. Cruz, a former student at t ...
, the surviving students, teachers, and parents became strong leaders in the effort to ban assault weapon sales and easy accessibility to weapons.


See also

* :Mass shootings by country * Active shooter *
Copycat crime A copycat crime is a criminal act that is modelled after or inspired by a previous crime. It notably occurs after exposure to media content depicted said crimes, and/or a live criminal model. Copycat effect The copycat effect is the alleged tende ...
* Domestic terrorism *
Mass murder Mass murder is the act of murdering a number of people, typically simultaneously or over a relatively short period of time and in close geographic proximity. The United States Congress defines mass killings as the killings of three or more pe ...
* School shooting * Spree killer


References


External links


Timeline: Deadliest U.S. mass shootings

Public Mass Shootings in the United States: Selected Policy Implications
Congressional Research Service
Algoworld: Scientific Ways To Predict Mass Shootings

Washington Case Revives Debate About 'Contagious' Mass ShootingsYes, Mass Shootings Are Occurring More Often
''Mother Jones.'' October 21, 2014. {{Authority control Gun violence Killings by type Terrorism tactics Attacks by method Mass murder Rampages