On the night of March 8, 1971, eight activists calling themselves the Citizens’ Commission to Investigate the FBI broke into a small FBI office in Media, Pennsylvania. They deliberately chose the night of the famous Muhammad Ali vs. Joe Frazier boxing match, hoping the event would keep people, including police, occupied. Once inside, they removed hundreds of FBI files and later sent copies to newspapers and members of Congress. But there was an unusual step before the FBI break-in. To practice getting through a locked door, members of the group targeted a nearby draft board office. According to later accounts of the operation, they placed a note on its door asking employees not to lock it that night. The trick worked, allowing them to enter after hours and practice searching through government files. They later used their preparation to break into the FBI office in Media. What they found became far more important than the burglary itself. Among the stolen records were documents that helped expose COINTELPRO, the FBI's secret counterintelligence program. The program had been used to infiltrate, monitor and disrupt political and activist groups, sometimes even when there was little or no evidence of illegal activity. After the documents reached journalists and Congress, public scrutiny of the FBI intensified and its domestic intelligence practices were eventually reevaluated.