COINTELPRO was the FBI's covert counterintelligence program under J. Edgar Hoover. It surveilled, infiltrated, discredited and disrupted domestic political groups: the Communist Party, civil-rights groups (Martin Luther King Jr., including the anonymous 1964 'suicide letter'), the Black Panthers, AIM, the Young Lords, the New Left and antiwar groups. It was exposed only when the Citizens' Commission to Investigate the FBI burgled the Media, PA field office on March 8, 1971 and mailed the files to the press. The Church Committee (1975–76) documented it. The burglars were never caught and identified themselves in 2014.