On September 26, 2014, 43 male students from the Ayotzinapa Rural Teachers' College were forcibly taken then disappeared in Iguala, Guerrero, Mexico. According to official reports, the students' annual commandeering of several buses to travel to Mexico City to commemorate the anniversary of the 1968 Tlatelolco Massacre turned deadly. During the journey, local police attempted to intercept several of the buses of students, through the use of road blocks and the firing of weapons.
Details of what happened during and after the assault remain unclear, but the official investigation concluded that once 43 of the students were forcibly taken into custody, they were handed over to the local Guerreros Unidos ("United Warriors") crime syndicate and presumably killed. Mexican authorities claimed Iguala's mayor, José Luis Abarca Velázquez, and his wife María de los Ángeles Pineda Villa, masterminded the abduction. However, there are also reports linking Federal forces to the case, some stating that military personnel in the area deliberately omitted helping the students in distress. Others state a direct involvement of the Mexican Army in the kidnapping and murder of the students.
Both Abarca and Pineda Villa fled after the incident, but were arrested about a month later in Mexico City. Iguala's police chief, Felipe Flores Velásquez, was arrested in Iguala, in the southern state of Guerrero, on October 21, 2016. The events caused social unrest in parts of Guerrero and led to attacks on government buildings, and the resignation of the Governor of Guerrero, Ángel Aguirre Rivero, in the face of statewide protests. The forced mass disappearance of the students arguably became the biggest political and public security scandal Mexican President Enrique Peña Nieto had faced during his administration. It led to nationwide protests, particularly in the state of Guerrero and Mexico City, and international condemnation.
On November 7, 2014, the Mexican Attorney General Jesús Murillo Karam gave a press conference in which he announced that several plastic bags containing human remains, possibly those of the missing students, had been found by a river in Cocula, Guerrero. At least 80 suspects have been arrested in the case, of which 44 were police officers. Two students have been confirmed dead after their remains were identified by the Austria-based University of Innsbruck.
On September 26, 2014, at approximately 6:00 p.m. (CST), more than 100 students from the Raúl Isidro Burgos Rural Teachers College of Ayotzinapa in Tixtla, Guerrero, travelled to Iguala, Guerrero, to commandeer buses for an upcoming march in Mexico City.[unreliable source?]
The students had previously attempted to make their way to Chilpancingo, but state and federal authorities blocked the routes that led to the capital. In Iguala, their plan was to interrupt the annual DIF conference of María de los Ángeles Pineda Villa, local President of the organization and the wife of Iguala mayor José Luis Abarca Velázquez was taking place. The purpose of the conference and after-party was to celebrate her public works, and to promote her campaign as the next mayor of Iguala. The student-teachers also had plans to solicit transportation costs to Mexico City for the anniversary march of the 1968 student massacre in Tlatelolco. However, on their way there, the students were intercepted by the Iguala municipal police force at around 9:30 p.m., reportedly on orders of the mayor.
The details of what followed during the students' clash with the police vary. According to police reports, the police chased the students because they had hijacked three buses and attempted to drive them off to carry out the protests and then return to their college. Members of the student union, however, stated that they had been protesting and were hitchhiking when they clashed with the police. As the buses sped away and the chase ensued, the police opened fire on the vehicles. Two students were killed in one of the buses, while some fled into the surrounding hills. Roughly three hours later, escaped students returned to the scene to speak with reporters. In a related incident, unidentified gunmen fired at a bus carrying players from a local soccer team, which they had presumably mistaken for one of the buses that picked up the student protestors. Bullets struck the bus and hit two taxis. The bus driver, a football player, and a woman inside one of the taxis were killed. The next morning, the authorities discovered the corpse of a student, Julio César Mondragón, who had attempted to run away during the gunfire. His eyes had been gouged out and the skin of his face flayed to a bare skull. In total, 6 people were killed and 25 wounded.
After the shootings, eyewitnesses said that students were rounded up and forced into police vehicles. Once in custody, the students were taken to the police station in Iguala and then handed over to the police in Cocula. Cocula deputy police chief César Nava González then ordered his subordinates to transport the students to a rural community known as Pueblo Viejo. At some point, while still alive, the students were handed over by the police to members of the Guerreros Unidos ("United Warriors"), a criminal organization in Guerrero (splintered from the Beltran Leyva cartel). One of the trucks used to transport the students was owned by Gildardo López Astudillo (alias "El Gil" and/or "El Cabo Gil"), a high-ranking leader of the gang. "El Gil" then called Sidronio Casarrubias Salgado, the top leader of Guerreros Unidos, and told him that the people he had in custody posed a threat to the gang's control of the area. Presumably, Guerreros Unidos believed that some of the students were members of a rival gang known as Los Rojos. With that information, Casarrubias allowed his subordinates to kill the students. Investigators believe that a gang member known by his alias "El Chucky" and/or "El Choky" took part in the killings. He was suspected of collaborating with Francisco Salgado Valladares, one of Iguala's security chiefs, in kidnapping the students.
According to investigators, the students were taken to a dump in the outskirts of Cocula. About 15 students died of suffocation by the time they reached the site. The rest of the students were then killed by Patricio Reyes Landa, Jonathan Osorio Gómez and Agustín García Reyes. These three suspects then dumped the bodies in a pit, and some other suspects known only by their aliases burned the corpses with diesel, gasoline, tires, wood and plastic. They also destroyed the students' clothing in order to erase all possible evidence. The fire lasted from midnight until 2:00 or 3:00 p.m.; the gang assigned guards throughout the day to make sure that the fire was kept alive. When the fire had gone down, the suspects threw dirt in to cool the pit. They then placed the remains in eight plastic bags and dumped them in the San Juan river in Cocula, reportedly on orders from a man known only as "El Terco". "El Gil" then sent a text message to Casarrubias Salgado confirming the completion of the task. "We turned them into dust and threw their remains in the water. They [authorities] will never find them", the text read. Initially, 57 students were reported missing; fourteen of them, however, were located after it was found that they had returned to their families or had made it back safely to their college. The remaining 43 were still unaccounted for. Student activists accused authorities of illegally holding the missing students, but Guerrero authorities said that none of the students were in custody. Believing that the missing students had fled through the hills during the shootings, authorities deployed a helicopter to search for them. The 43 students, however, were never found.
The mass disappearance of the 43 students marked arguably the biggest political and public security crisis Mexican President Enrique Peña Nieto had yet faced in his administration (2012–2018). The incident drew worldwide attention and led to protests across Mexico, and international condemnation. The resulting outrage triggered near-constant protests, particularly in Guerrero and Mexico City. Many of them were peaceful marches headed by the missing students' parents, who come from poor families in rural Mexico. Other demonstrations turned violent, with protesters attacking government buildings. Unlike other high-profile cases that have occurred during the Mexican Drug War (2006–present), this case resonated particularly strongly because it highlighted the level of collusion organized crime had reached with local governments and police agencies.
The Raúl Isidro Burgos Rural Teachers College in Ayotzinapa, founded in 1926, is an all-male school that has historically been associated with student activism. Notorious Mexican teacher and guerrilla leader Lucio Cabañas studied in this school.  Guerrero teachers, including the students from Ayotzinapa, are known for their "militant and radical protests that often involve hijacking buses and delivery trucks." The appropriation of the vehicles was, according to the students, routine and temporary. Most of the buses are usually returned after the protests conclude. This tactic has largely been tolerated by law enforcement even though it is inconvenient for other users of public transport. Though federal agents tend not to actively confront students when they "borrow" buses, the practice puts students and teachers at odds with local officials. Other protest tactics used by the students include throwing rocks at police officers, blocking roads, and stealing property. Students claim those tactics are the only way to get attention and earn funds from the government. Local authorities in Guerrero tend to be suspicious of student protests because they suspect them of having ties with leftist guerrillas or rival political groups. In 1995, the Guerrero state police killed 17 farmers and injured 21 others when they were carrying out a protest. The massacre led to the creation of the Popular Revolutionary Army (Spanish: Ejército Popular Revolucionario), which is believed by some state officials to retain some political influence in Guerrero. Students claim to have no ties with such groups, and that the only thing they have in common with them is their socialist ideology. In addition, in places like Guerrero, where the bus companies are assumed to pay protection money, the student campaigns are seen as threatening to organized crime.
In December 2011, two students from the Raúl Isidro Burgos Rural Teachers College of Ayotzinapa were gunned down and killed by the Guerrero State Police during a rally on the Cuernavaca to Acapulco federal highway.
In February 2013, President Enrique Peña Nieto published an education reform bill in the Official Journal of the Federation in agreement with the pact signed by the three main political parties, PRI, PAN and PRD, named Pact for Mexico. This bill aims to make public education more effective, with higher standards, higher achievement, and higher focus on the needs of students, as well as introducing a competitive process for the hiring, promotion, recognition, and tenure of teachers, principals, and administrators and declared that all previous appointments that did not conform to the procedures were null. Some teachers oppose these reforms because they refuse to be tested and graded on their students performance with universally standard exams that do not take in account the socio-economic differences between urban and under-equipped rural schools, that has an effect the students performance.
In May 2013 the union teachers of CNTE started rallies and strikes across Mexico, staying in the Zócalo of Mexico City in a sit-in protest against the Reform and the bill of secondary laws. Students of the Rural Teachers College of Ayotzinapa joined the protest against Education Reform. In September 2013, the police retook the Zocalo square using water cannons and tear gas.
Business organizations of Baja California, Estado de Mexico, and Chiapas demanded decisive action against teachers on strike, as well as politicians from the PRD and PAN, and academics. In October 2013, three teachers protesting against the Education Reform suffered head injuries and a broken arm after being pelted with stones. The attack was blamed on the inhabitants of the Tepito Neighbourhood, although teachers blamed the Federal Government.
In January 2014, the Governor of the State of Mexico, Eruviel Avila Villegas, sent a bill to the local Congress proposing to sanction those teachers who were actively protesting and not attending their jobs with fines and jail time. In August 2014, journalist Carlos Loret de Mola claimed to have heard a person in a meeting with President Peña Nieto saying "we're going to beat up those CNTE guys" ("Les vamos a partir la madre a los de la CNTE").
On September 28, 2014, members of the Office of the General Prosecutor in Guerrero arrested 22 police officers for their involvement in the shooting and disappearance of the students. Police chief and Iguala's Director of Public Security, Felipe Flores Velásquez, turned in firearms, police vehicles, time shifts information, and policemen involved in the incident to the Ministry of Public Security. The state government said that the 280 municipal police officers in Iguala had been called in for questioning about the incidents. All but 22 of them were released without charge. State prosecutor Iñaky Blanco Cabrera stated that the 22 officers detained had used excessive or deadly force against the students. The investigations concluded that 16 of the 22 police officers had used firearms against the students. They were imprisoned at the state penitentiary Social Reintegration Center of Las Cruces in Acapulco, Guerrero. A few days later they were transferred to the Federal Social Readaptation Center No. 4 (also known as "El Rincón"), a maximum-security prison in Tepic, Nayarit, under aggravated murder charges.
The Mayor of Iguala, Abarca, claimed in an interview on September 29, 2014 that he had no previous knowledge of the incident, and that he could not have been responsible because he was attending a conference and after-party when the clashes took place. Following this he claimed to have left to dine with his family at a restaurant. He said he heard about the attack when his personal secretary called him and gave him the details. "After that, I was in constant communication [with the police], giving them orders to not fall for provocations", Abarca said. He said he was not aware of the students that were missing or of the investigation. He also pledged that he would not resign and agreed to cooperate if he was investigated. That day, Abarca met with the former Party of the Democratic Revolution (PRD) President Jesús Zambrano Grijalva, who requested him to formally petition a resignation. Moreover, one account stated that Abarca's wife María de los Ángeles Pineda Villa was last seen at Guerrero's Tourist Promotion Body (Protur) in Acapulco that day in a private meeting with State Governor Ángel Aguirre Rivero. Eyewitnesses reportedly saw Pineda "worried" and "in a hurry".
On September 30, 2014, Abarca asked for a 30-day leave of absence which was granted by the Iguala city council. His absence came amid pressures from other members of his political party, the PRD, who asked him to resign in order to facilitate investigations. Before the official session was over at the city council, federal agents arrived asking for Abarca, but he had already left. Federal agents then raided the mayor's house because he had an order of appearance. Abarca was believed to have left Iguala with his wife and children. Investigations concluded that he had left Guerrero but was still in hiding somewhere in Mexico. "We are looking for him in an ongoing investigation. We have people on him," said Tomás Zerón de Lucio, head of the Criminal Investigation Agency. Rumors suggested that he had fled the country. Felipe Flores Velásquez was also issued an order of appearance. However, Flores was not located. At that time, Abarca still benefited from immunity under Mexican law, which protects elected officials from prosecution unless they commit a serious crime. In Abarca's case, he was protected from prosecution of common crimes, but not from federal charges.
A mass grave, initially believed to contain the charred bodies of 28 of the students, was discovered near Iguala on October 5, 2014. They had been tortured and, according to reports, burned alive. Subsequent reports increased the estimate of the number of bodies found to 34. On October 14, 2014, police announced that forensic tests had shown that none of the 28 bodies from the first mass grave corresponded to the missing students, but on the same day four additional graves, with an unknown number of bodies, were discovered.
Eight other cartel members were also arrested. The mayor of Iguala, José Luis Abarca, has been accused of direct participation in the earlier torture and murder of an activist; the mayor's wife, María de los Ángeles Pineda Villa, is the sister of known members of the Beltrán-Leyva Cartel. The mayor and his wife, and the police chief, fled the area and were declared fugitives. Protesters demanding justice for the victims marched in several cities. On October 13, 2014, protesters ransacked and burned government offices in Chilpancingo, the capital of Guerrero, although the fire was controlled, it destroyed part of the history records of birth, marriages and deaths of Chilpancingo.
A number of theories have been proposed to explain the killing of the students. The students all attended a local teacher training college with a history of left-wing activism and radicalism, but it is not clear that they were targeted for their political beliefs. Some think that they may have angered Guerreros Unidos by refusing to pay extortion money. Others believe there may be a link between the students' disappearance and a speech given by the wife of Iguala's mayor on the day of the clashes. She was speaking to local dignitaries when the students were protesting in Iguala and some believe they may have been targeted because it was feared they could disrupt the event.
On October 20, 2014, masked protesters set fire to an office of a state social assistance program, Guerrero Cumple, in Chilpancingo, burning computers and filing cabinets. On the next day some 200 teachers set fire to the regional office of the Party of the Democratic Revolution in Chilpancingo which controls the state government.
On October 22, 2014, the federal government stated that Abarca had ordered the arrest of the students in order to prevent them from obstructing a municipal event. The PGR described him and his wife as the probable masterminds of the mass kidnapping. The director of the Iguala police force, Felipe Flores, was also mentioned as one of the main perpetrators. In Mexico City over 50,000 protesters demonstrated in support of the missing students. Joining the protests in Morelia, Michoacán, were members of Mexico's movie industry – actors, directors, writers and producers- who lit 43 candles on the steps of a Morelia theater. In Venezuela, students also demonstrated in support at the Central University of Venezuela. In the U.S. state of Texas, students and professors rallied at the campus of the University of Texas at El Paso. The name of each disappeared student was read out and signatures were gathered for an open letter of protest to the Mexican consulate. Protests also took place in London, Paris, Vienna and Buenos Aires.
On the same day in Iguala, dozens of protesters, many wearing masks, broke away from a peaceful march of thousands of people demanding that the missing students be returned alive, and broke into the city hall, shattered windows, smashed computers and set fire to the building.
On October 23, 2014, the Governor of Guerrero, Ángel Aguirre Rivero, asked Congress for a leave of absence in order to step down from office. According to Mexican law, state governors cannot resign but may ask for a leave of absence; though an uncommon decision in Mexico, Aguirre decided to leave his post, pressured by his party and public opinion. State lawmakers voted to replace Rivero with Rogelio Ortega Martínez, who will serve until October 2015.
On October 27, 2014, the authorities arrested four members of Guerreros Unidos; according to officials, two of them received a large group of people from other gang members in Iguala on the night the mass abduction took place. Their testimonies helped the authorities locate new mass graves in Cocula, Guerrero, about 17 km (10 mi) from Iguala. The area was cordoned off by the Mexican Army and Navy before the forensic teams arrived to carry out their investigations.
On October 29, 2014, a few hours after being appointed as the interim mayor of Iguala, Luis Mazón Alonso asked for a leave of absence. He said in an interview that he had decided to resign because some members of the Iguala city council were self-serving and had no interest in improving the situation. He is the brother of Lázaro Mazón Alonso, the former Secretary of Health in Guerrero, who resigned on October 16, 2014 after the former Governor Aguirre accused him of being linked to Abarca. Silviano Mendiola Pérez became the interim mayor of Iguala on November 11.
On November 9, 2014, there was a demonstration in Mexico City during which the protesters carried handmade banners with the words "Ya me cansé" ("I've Had Enough" or "I'm Tired"), in reference to a comment made by Mexico's attorney general, Jesús Murillo Karam, at a press conference on the Iguala kidnapping . Protesters also chanted: "Fue el Estado" ("It was the State"). Some masked protesters broke away from the otherwise peaceful demonstration as it drew to a close, tore down the protective metal fences set up around the National Palace in Mexico City's main Zócalo plaza and set fire to its imposing wooden door. Clashes with riot police followed before the square was cleared.
On November 20, 2014, the relatives of 43 missing Mexican students arrived in Mexico City after touring the country and led mass protests demanding action from the government to find them. Thousands of people took part in three protest marches in the capital. Demonstrators called for a nationwide strike. Several hundred protesters gathered near the National Palace, small groups of protesters were throwing bottles and fireworks at the palace and the police tried to push them back using water cannon. Near Mexico City International Airport before the marches began some 200 hooded protesters threw rocks and petrol bombs at police officers who had been trying to disperse them. Protests also took place in other parts of Mexico and abroad. Mexican President Peña Nieto accused some of the protesters of trying to "destabilize" the state.
The Union of Towns and Organizations of Guerrero (UPOEG), along with activists, parents of the missing students, and other drug war victims from different parts of Mexico, organized and led a search in Iguala on November 23 to uncover more bodies buried in the municipality's clandestine mass graves. They uncovered seven bodies in mass graves at a rural community known as La Laguna. The purpose of the search was to locate mass graves for federal authorities to investigate. "We are doing the job authorities are refusing to do", one of the activists said. Locals stated that members of organized crime frequented the area to bury people around there. The following day, the PGR arrived at Iguala to recover the bodies and investigate them. They planned to further their investigations on the mass graves found by the UPOEG. Those present told federal authorities to not allow local officials to intervene in the case. The UPOEG announced that they would be leading a committee to uncover more mass graves in Guerrero. Bruno Plácido Valerio, the leader of the group, stated that from January 2013 to November 2014, at least 500 bodies were located between Ayutla and Iguala. He believes that there are more bodies buried in mass graves all across the state.
On January 12, 2015, relatives and supporters of the missing students tried to gain access to an army base in Iguala. The protesters demanded to be let in to search for the missing students. They accused the security forces of colluding in their disappearance. They said soldiers had witnessed a clash between the students and local police which immediately preceded their disappearance, and reportedly failed to intervene.
On January 26, 2015, after the confession of one of the men who plotted against the students had been finalized, Mexican officials took it to the media to inform the country that the 43 students had been killed and their remains were burned.
On May 7, Francisco Salgado Valladares, the deputy police chief of Iguala, was arrested by the Federal Police in Cuernavaca, Morelos. He was wanted for his alleged involvement in intercepting the students on their way to Iguala. According to law enforcement reports, Salgado Valladares had connections with the Guerreros Unidos gang and reportedly received bribes from them to hand out to other members of the police corporation. At the time of his arrest, he was one of the most-wanted suspects in the case.
At around 2:30 a.m. (CST) on 4 November 2014, an elite squadron of the Federal Police arrested former Iguala mayor Abarca and his wife Pineda at a house in the Tenorios neighborhood in Iztapalapa, Mexico City.[A 1] Neither of them resisted arrest. Abarca confessed that he was tired of hiding and that the pressure was too much for him. His wife, on the other hand, showed her disdain for law enforcement. The arrest was confirmed through Twitter by the Federal Police spokesperson José Ramón Salinas early that morning. Once in custody, they were taken by law enforcement to the federal installations of SEIDO, Mexico's anti-organized crime investigation agency, for their legal declaration. At the time of their arrest, Abarca and Pineda were among Mexico's most-wanted.
In addition to Abarca and Pineda, another person was arrested by the authorities that day in Santa María Aztahuacán, Iztapalapa. Federal agents stated that the individual was Noemí Berumen Rodríguez, who was believed to have aided the couple in their hiding by lending them her house. She is a friend of the couple's 25-year-old daughter Yazareth Liz Abarca Pineda, who was taken into custody along with her parents. However, Yazareth was only considered an eye-witness and does not face criminal charges. Authorities were able to link Berumen with the Abarcas due to her friendship with Yazareth and her presence on social media. They discovered that Yazareth had a picture with a friend that lived in Iztapalapa, who followed Berumen online.
When the Abarcas left Iguala after the mass kidnapping in September 2014, law enforcement began an investigation to locate all the properties owned by the couple and their families. Abarca had several properties in Guerrero and in other states, but authorities believed that he was hiding in Mexico City or Monterrey, Nuevo León.[A 2] After ruling out Monterrey as a possible hideout, authorities concentrated on three properties in Iztapalapa where they believed the couple was hiding. Through the couple's real estate businesses, authorities were also able to link Berumen to the family once more and locate her properties in Iztapalapa. In one of the properties, investigators noticed something unusual: they regularly saw a woman (now known to be Berumen) going in and out of a property that was thought to be abandoned. Authorities then mounted an investigation and surveillance operation on Berumen before finally entering the property and arresting Abarca and Pineda.
At 5:10 p.m. on November 5, 2014, Abarca was transferred to the Federal Social Readaptation Center No. 1 (commonly referred to as "Altiplano"), a maximum-security prison in Almoloya de Juárez, State of Mexico. He was imprisoned for his pending homicide charge, organized crime, and forced disappearance charges. A judge ordered for Pineda to remain under federal custody for 40 days in order to gather more evidences against her. On December 15, her federal custody detention was extended to 20 more days. She was sent to the Federal Social Readaptation Center No. 4 in Nayarit state on January 4, 2015. Berumen was bailed from prison a few days after her arrest.
On November 7, 2014, the family members of the missing students had a conference in the military hangar in Chilpancingo National Airport with the Attorney General of Mexico Jesús Murillo Karam. In the meeting, authorities confirmed to the families that they had found several bags containing unidentified human remains. According to investigators, three alleged members of the Guerreros Unidos gang, Patricio Reyes Landa (alias "El Pato",) Jonathan Osorio Gómez (alias "El Jona",) and Agustín García Reyes (alias "El Chereje",) directed authorities to the location of the bags alongside the San Juan river in Cocula. Murillo Karam stated that the three suspects admitted to having killed a group of around 40 people in Cocula on September 26, 2014. The suspects stated that once the police handed over the students to them, they transported them in trucks to a dumping ground just outside town. By the time they got there, 15 students had died from asphyxiation. The remaining students were interrogated and then killed. The suspects dumped the bodies in a huge pit before fueling the corpses with diesel, gasoline, tires, wood and plastic. To destroy all evidence, the suspects also burned the clothing the students had on them. The fire lasted from midnight to around 2:00 and 3:00 p.m. the next day. Once the fire had subsided, the suspects returned to the site and threw dirt and ashes to cool down the remains. They then filled up eight plastic bags, smashed the bones, and threw them in the river on orders from a Guerreros Unidos member known as "El Terco."
At the press conference, Murillo Karam showed a video re-enactment of how the bodies were transported, and several video interrogations of the suspects, and also video of teeth and bones recovered at the site. He said that the remains were badly burned, making DNA identification difficult. In order to properly identify the remains, the federal government turned to a team of internationally renowned forensic specialists from the University of Innsbruck in Austria for help, though he said there was no definite timeframe for the results. The families of the students, however, did not accept the statements of the Attorney General and continue to believe that their sons are still alive. They said that they will not accept that their children are dead until it is proven scientifically by independent investigators, since they fear that the government is attempting to close the case in order to counter public outrage. Murillo Karam stated that 74 people had been arrested since the case started and another 10 had arrest warrants. He said that until the situation of the students is confirmed, the case remains open and the government formally considers the students "disappeared."
After meeting with the Party of the Democratic Revolution (PRD) president Carlos Navarrete Ruiz and secretary-general Héctor Miguel Bautista López on November 25, 2014, Cuauhtémoc Cárdenas, the party's founder and senior leader, resigned and issued a letter explaining his departure. A three-time presidential candidate, Cárdenas stated that he had old differences with other party leaders in how to tackle the internal problems of the PRD and on how to help it restore credibility. Days earlier, he had called for all of the national executive committee of the PRD, Navarete and Batista included, to resign for failing to reform the party. According to Cárdenas, the PRD, which governs Guerrero state and the city of Iguala, was on the verge of dissolution following the political crisis caused by the mass disappearance of the 43 students. The alleged mastermind of the abductions, Jose Luis Abarca Velásquez, was a member of the PRD. The incidents in Iguala caused arguably one of the biggest political crisis the PRD and Mexico's political left had faced since the party's formation in 1989. When Abarca was linked to the disappearances, many top politicians who had supported his campaign as mayor distanced themselves from him. But many of them also pointed fingers at each other, arguing that some members of the PRD were allied to Abarca.
On December 6, 2014, the first of the 43 missing students, Alexander Mora Venancio (aged 19), was confirmed dead by forensic specialists at the University of Innsbruck. Specialists were able to confirm the status of Mora Venacio by comparing his bone fragments with the DNA samples the laboratory had of his father Ezequiel Mora Chavez and his brothers Omar and Hugo Mora Venancio. The news was first made public by the student committee of the Raúl Isidro Burgos Rural Teachers' College of Ayotzinapa on the school's Facebook page, and the Argentine Forensic Anthropology Team (EAAF) notified the parents of the student on the status of their son. The committee claimed that the human remains of Mora Venancio were among those located in Cocula, Guerrero. Mexican authorities confirmed the reports the following day at a press conference and released a 10-page report from Dr. Richard Scheithauer, head of the Institute for Legal Medicine at University of Innsbruck, confirming Mora Venancio's status. Attorney General Jesús Murillo Karam stated that at least 80 people had been arrested in the case, and that 44 of them were policemen of Cocula and Iguala. He said that 16 police officers from these two municipalities were still being sought, along with 11 other probable suspects. After the announcement, classmates, family members, and people close to Mora Venancio paid their respects at his home in Tecoanapa, Costa Chica, Guerrero. The state of Guerrero declared a three-day mourning for his death. In Mexico City, marches led by the students' family members intensified with the confirmation of Mora Venancio's death. "This day of action will continue until we find the remaining 42 alive", the group's spokesperson said in front of thousands of protestors gathered at the Monumento a la Revolución landmark.
The massacre sparked protests worldwide. The protests began to take place after the formal arrest of former Iguala mayor Jose Luis Abarca and his wife Maria de Los Angeles on November 4, 2014. Global action has not only been manifested through protests, but also via online support. #Yamecanse, #FueElestado, #TodosSomosAyotzinapa, and #AccionGlobalPorAyotzinapa are amongst the most popular hashtags which allow users to express their thoughts via Instagram, Facebook, and Twitter.
Relatives of the missing 43 students toured the United States in April 2015 to raise awareness of the events that took place in Iguala. Known as the Caravana 43, the tour was organized in conjunction with a national coalition of social activist groups seeking justice for Ayotzinapa. The tour of 14 parents, students, and advocates was split into three groups that covered eastern, middle, and western regions of the United States, stopping in a total of 43 cities over 19 states before convening for a march to the United Nations Headquarters in New York City. Caravana 43 claimed no connection to any official political party or national organization. Instead, its organization was completely voluntary with transportation and accommodations for the relatives covered entirely by donations from individuals in host cities. Local groups "committed themselves to support the fundamental goal of providing a platform for the parents in the United States and assumed the organizational and financial responsibility for the Caravan." By creating the opportunity for the relatives to travel throughout the United States, organizers hoped to better inform the American public and new media about the attacks and disappearances. In each of the host cities, relatives spoke not only of their loss, but also of the systematic violence and impunity committed by the Mexican government and its police. Official statements from the tour affirm "The problem is Mexico has a long history documented by Mexican and foreign human rights organizations, other governments, and international organizations of using torture to extract confessions which are then used to construct narratives to protect criminals, the police, military officers, government officials, and politicians … Consequently, many people have no faith in the government's account and have demanded that the investigations continue." Relatives met with students, teachers, and laborers, pleading for the United States to intervene in the crisis. Moreover, the relatives asked elected officials to rethink U.S. foreign policy as it pertains to Mexico, specifically in regards to the Mérida Initiative. Many believe that these funds are being used to suppress the people, rather than fight the drug cartels. Caravana 43 achieved relative success in the United States. After meeting with the groups, several legislators voiced public support for their effort. Cristina Garcia, a California Assembly member stated, "It's a human rights violation that's been going on and it affects a lot more than just these students… [The state] has the responsibility to affect change with our border country." Crowds were gathered at each stop and thousands of people joined in social media platforms to promote the tour. The project served as a unifying mechanism not only across international borders, but also for Latino communities within the United States. Following the end of Caravana 43 in the U.S., the parents, students, and advocates hope to continue in their search for truth by organizing similar tours across South America and Europe.
A young Mexican man interrupted Malala Yousafzai's Nobel Peace Prize award ceremony in a protest over the Iguala kidnapping, but was quickly taken away by the awards security personnel. Yousafzai later sympathised, and acknowledged that problems are faced by young people all over the world, saying "there are problems in Mexico, there are problems even in America, even here in Norway, and it is really important that children raise their voices."
In September 2015, the results of a six-month investigation by a panel of experts assembled by the Inter-American Commission on Human Rights became known to the public. The investigation concluded that the government's claim that the students were killed in a garbage dump because they were mistaken for members of a drug gang was "scientifically impossible" given the setting's conditions. But other experts, however, criticized this investigation for its shortcomings and stated that it was possible for the missing students to have been killed at the dump. The government responded to the report by stating that they would carry out a new investigation and a second opinion from other renowned experts to determine what happened the night the students were presumably killed.
On the night of September 26, Iguala and Cocula police under orders from the mayor of Iguala, attacked the Ayotzinapa normal school students. They killed three and handed over another 43 to Warriors United, the group that allegedly murdered and incinerated them. That's the official version. But an investigative report, based on official documents, videos and testimonies, tells another story: the attack was orchestrated and executed by the Federal Police, with the Army's complicity or open collaboration.
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43 normalistas de Ayotzinapa.