This picture is just one of thousands of the stories revealed.

On March 8, 1971, a cab driver, a day care provider, and two professors broke into an FBI office in Media, Pennsylvania, and stolemore than 1,000 classified documents that they then mailed anonymously to several U.S. papers. They were members of the Citizens’ Commission to Investigate the FBI. They selected the night of the “Fight of the Century,” the boxing match between Muhammad Ali and Joe Frazier, when most people would be glued to their radios.

The documents revealed the FBI’s Counter Intelligence Program—COINTELPRO—which was a series of covert, and often illegal, activity. The FBI conducted surveillance, infiltration, discreditation, and the disruption of domestic political organizations—including actions that led to murder. (Learn more about from Democracy Now!’s interview with three of the people who broke in.)

Here is just one of the documents:

On December 7, 1955 the FBI’s Mobile office began forwarding information on the bus boycott to FBI director J. Edgar Hoover. The special agent in charge of the office reports that someone, probably a member of the Montgomery police department, had been assigned to find “derogatory information” about King.

The Citizen’s Commission members involved in the break-in were never caught nor revealed their names until 2014. In 2015, a documentary film, 1971, was released on the case.