"In postwar Los Angeles, the putative birthplace of noir, there was rampant corruption in the police, rampant racism . . . a low hum of hysteria in the air. We can feel it now. Even if crime is, say, here in New York City, at a historic low, the threat of domestic terrorism—school shootings, lone gunmen—feels palpable. In eras tinged with chaos in the popular imagination, noir thrives."