In 1971, eight people broke into an FBI office in Pennsylvania, making off with confidential documents. Despite a huge manhunt involving 200 federal agents, the burglars were never caught. Only recently, after lawyers advised the group the US government can no longer try them for their crime, have five of the people who broke into that office on that night come forward. The group — including a professor and a couple who had young children at the time of the break-in — took tremendous risks in obtaining the confidential documents. …