Roy K. Moore was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 FBI agent and former Marine

United States Marine Corps

The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 who was best known as the chief agent who investigated the disappearance of civil rights workers James Chaney

James Chaney

James Earl "J.E." Chaney , from Meridian, Mississippi, was one of three American civil rights workers who were murdered during Freedom Summer by members of the Ku Klux Klan near Philadelphia...

, Michael Schwerner

Michael Schwerner

Michael Henry Schwerner , was one of three Congress of Racial Equality field workers killed in Philadelphia, Mississippi, by the Ku Klux Klan in response to their civil rights work, which included promoting voting registration among Mississippi African Americans...

 and Andrew Goodman

Andrew Goodman

Andrew Goodman was one of three American civil rights activists murdered near Philadelphia, Mississippi, during Freedom Summer in 1964 by members of the Ku Klux Klan.-Early life and education:...

. The 1988 film Mississippi Burning

Mississippi Burning

Mississippi Burning is a 1988 American crime drama film loosely based on the FBI investigation into the real-life murders of three civil rights workers in the U.S. state of Mississippi in 1964. The film focuses on two fictional FBI agents who investigate the murders...

, starring Gene Hackman

Gene Hackman

Eugene Allen "Gene" Hackman is an American actor and novelist.Nominated for five Academy Awards, winning two, Hackman has also won three Golden Globes and two BAFTAs in a career that spanned five decades. He first came to fame in 1967 with his performance as Buck Barrow in Bonnie and Clyde...

 and Willem Dafoe

Willem Dafoe

Willem Dafoe is an American film, stage, and voice actor, and a founding member of the experimental theatre company The Wooster Group...

was based on that case. Because of the efforts of Moore and his agents, nineteen men were indicted and seven were convicted. All served less than 6 years in prison.