I haven't lived in Chicago for many years, but I remember getting hassled on the street by a trio of plainclothes cops in an unmarked car in the early '70s. Probably the Gang Squad, although they also had a Red Squad: "Empty your pockets." "What's this shirt?" Etc., etc. Fortunately for me I was a white kid, so the hassle was only verbal, not physical.
If you want to get Royko's take on cops back then, read "Boss." He paints them as corrupt graft-takers. You want to avoid a speeding ticket? To paraphrase, "I've got three pencils, a $10 pencil and two $20 pencils. I think you need a $10 pencil, don't you?" The $20 pencils were for prostitutes giving blow jobs in the back of the corner bar.
When I see a TV show that paints Chicago cops like phalanx of heroes, I have to laugh. Even Hollywood can't erase history.
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