Survivors of Police Torture Share Their Stories at Invisible Institute Event CPD presence and police tape at the scene of a shooting. By Content Warning: This article contains a brief description of police brutality. Eleven survivors of police torture presented their stories at an event commemorating the launch of the Chicago Police Torture Archive, a “human rights documentation” of former Chicago Police Department (CPD) commander Jon Burge’s violence against more than 100 Black Chicagoans during the 1970s–90s. The archive was published by the Invisible Institute, a journalism production nonprofit that works on issues of police transparency and accountability in the city.