The Tulsa Outrage was an act of vigilante violence perpetrated by the Knights of Liberty — a group understood at the time to be a contemporaneous incarnation of the
Ku Klux Klan
The Ku Klux Klan (), commonly shortened to the KKK or the Klan, is an American white supremacist, right-wing terrorist, and hate group whose primary targets are African Americans, Jews, Latinos, Asian Americans, Native Americans, and ...
— against members of the
Industrial Workers of the World
The Industrial Workers of the World (IWW), members of which are commonly termed "Wobblies", is an international labor union that was founded in Chicago in 1905. The origin of the nickname "Wobblies" is uncertain. IWW ideology combines genera ...
on November 9, 1917 in
Tulsa, Oklahoma
Tulsa () is the second-largest city in the state of Oklahoma and 47th-most populous city in the United States. The population was 413,066 as of the 2020 census. It is the principal municipality of the Tulsa Metropolitan Area, a region with ...
.
Background
Prior to
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, the
Industrial Workers of the World
The Industrial Workers of the World (IWW), members of which are commonly termed "Wobblies", is an international labor union that was founded in Chicago in 1905. The origin of the nickname "Wobblies" is uncertain. IWW ideology combines genera ...
saw some success in unionizing oil workers in
Oklahoma
Oklahoma (; Choctaw language, Choctaw: ; chr, ᎣᎧᎳᎰᎹ, ''Okalahoma'' ) is a U.S. state, state in the South Central United States, South Central region of the United States, bordered by Texas on the south and west, Kansas on the nor ...
.
In April 1917 The United States entered World War I while the
Oklahoma Legislature
The Legislature of the State of Oklahoma is the state legislative branch of the U.S. state of Oklahoma. The Oklahoma House of Representatives and Oklahoma Senate are the two houses that make up the bicameral state legislature. There are 101 sta ...
was out of session. Governor
Robert L. Williams
Robert Lee Williams (December 20, 1868 – April 10, 1948) was an American lawyer, judge, and the third governor of Oklahoma. Williams played a role in the drafting of the Oklahoma Constitution and served as the first Oklahoma Supreme Court ch ...
used the war as justification for the creation of the State Council of Defense and local county councils of defense to oversee the state during the war. Williams personally appointed members to these councils. Since the councils were created without the approval of the legislature, they were understood to lack legal authority and to be