A U.S. Congressional committee admitted that – as part of its “Cointelpro” campaign – the FBI had used many provocateurs in the 1950s through 1970s to carry out violent acts and falsely blame them on political activists
COINTELPRO (an acronym for COunterINTELligencePROgram) was a series of covert, and at times illegal, projects conducted by the United States Federal Bureau of Investigation (FBI) aimed at surveying, infiltrating, discrediting, and disrupting domestic political organizations. National Security Agency operation Project MINARET targeted the personal communications of leading civil rights leaders, Americans who criticized the Vietnam War, including Senators (e.g., Frank Church and Howard Baker), journalists, and athletes.
The FBI has used covert operations against domestic political groups since its inception; however, covert operations under the official COINTELPRO label took place between 1956 and 1971. COINTELPRO tactics are still used to this day, and have been alleged to include discrediting targets through psychological warfare; smearing individuals and groups using forged documents and by planting false reports in the media; harassment; wrongful imprisonment; and illegal violence, including assassination. The FBI's stated motivation was "protecting national security, preventing violence, and maintaining the existing social and political order."