The following excerpt comes from chapter 2 of my dissertation on postwar riots and policing. Well, I should say, this section may ultimately be cut or drastically downsized, as it is a bit of a tangent in a chapter that focuses on the implementation of stop-and-frisk, use-of-force controversies, and the fight over civilian review boards. But the story is interesting and timely in light of the much-hyped “Ferguson Effect” and other racialized crime panics of the last year and a half. I tried to reformat it to make it more readable on the blog. To this end I pared down the footnotes to the key and (relatively) most accessible texts.