Jon Graham Burge was an American police detective and commander in the Chicago Police Department. He was found guilty of having "directly participated in or implicitly approved the torture" of at least 118 people in police custody in order to force false confessions.

The Chicago Police Department (CPD) is the primary law enforcement agency of the city of Chicago, Illinois, United States, under the jurisdiction of the Chicago City Council. It is the second-largest municipal police department in the United States, behind the New York City Police Department. As of 2022 CPD had 11,710 sworn officers on duty, and in 2020 had over 948 other employees. Tracing its roots to 1835, the Chicago Police Department is one of the oldest modern police departments in the world.