Even if you have an allergic reaction to dramatic re-enactments in documentary films—and I confess I get itchy during them—1971 provides an exciting, non-hokey account of a remarkable true story. The March ’71 break-in at an FBI office in Media, Penn., has not enjoyed the lingering prominence of the Pentagon Papers or other high-profile leaks. Maybe that’s because the culprits were never found. Most of the participants were recently outed in onetime Washington Post reporter Betty Medsger’s book about the case, The Burglary. Medsger is an interviewee in the documentary, as are the former burglars willing to go on camera.