In Rahm Emanuel's Chicago Surveillance State, Controlling the Data Is Key

Chicago Mayor Rahm Emanuel speaks to the media, Thursday, Dec. 3, 2015, in Chicago. Faced with growing calls for federal intervention after a white officer fatally shot a black teen, Mayor Rahm Emanuel said Thursday the city would welcome a Justice Department investigation of “systemic issues” in the Chicago police department. (AP Photo/M. Spencer Green)

In Rahm Emanuel’s Chicago Surveillance State, Controlling the Data Is Key

In the most surveilled U.S. metropolis, the police killing of Laquan McDonald was extensively recorded. But political power is now about who controls the digital traces — and their exposure or erasure.