Edgar Ray Killen was an American Ku Klux Klan organizer who planned and directed the murders of James Chaney, Andrew Goodman, and Michael Schwerner, three civil rights activists participating in the Freedom Summer of 1964. He was found guilty in state court of three counts of manslaughter on June 21, 2005, the forty-first anniversary of the crime, and sentenced to 60 years in prison. He appealed the verdict, but the sentence was upheld on April 12, 2007, by the Supreme Court of Mississippi. He died in prison on January 11, 2018, at age 92.

The murders of Chaney, Goodman, and Schwerner, also known as the Freedom Summer murders, the Mississippi civil rights workers' murders, or the Mississippi Burning murders, were the abduction and murder of three activists in Philadelphia, Mississippi, in June 1964, during the Civil Rights Movement. The victims were James Chaney from Meridian, Mississippi, and Andrew Goodman and Michael Schwerner from New York City. All three were associated with the Council of Federated Organizations (COFO) and its member organization, the Congress of Racial Equality (CORE). They had been working with the Freedom Summer campaign by attempting to register African Americans in Mississippi to vote. Since 1890 and through the turn of the century, Southern states had systematically disenfranchised most black voters by discrimination in voter registration and voting.