The first two books feature at least three scenes so far of black people rooking white authorities by acting crazy, because white folks will believe anything, or at least they'll believe anything that involves black people acting insane, stupid, or violent. I suspect that this is Himes revealing the truth behind the pyrotechnic, absurdist violence of his mysteries to an audience completely incapable of getting the joke, or even that a joke is being told. I wouldn't, in other words, take this as anything like social realism. Himes is brashly and hyperbolically artificial.
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