If you find these corruption allegations hard to believe, I lived on the South Side of Chicago in the late 90s, and cops there expected to eat for free wherever they went and blew through stop signs and red lights like they weren't even there. (I have never seen this kind of police behavior anywhere else I've lived, which includes downtown Seattle.)
Oh, and I had a detective tell me once (after they'd found the guy who stole my laptop) not to worry because they had ways of making people talk. Shortly afterward I found out that detectives in that precinct had been sticking unloaded shotgun muzzles into suspects' mouths and pulling the trigger. I declined to press charges after I learned that.