JAMES TARANTO: Those Courageous Racists: Left-wing bigots pat themselves on the back. “The NSF is a federal agency, so your tax dollars have subsidized the authors of what can only be described as a racist rant. . . . What’s even weirder about the Childress twins’ piece is that their counterfactual actually is not counterfactual at all if you broaden the scope beyond acts of mass murder to murder more generally or all violent crime. Blacks do in fact commit a large disproportion of violent crimes, and while the subject is not taboo in respectable public debate, it is delicate. . . . But the absolute strangest thing about the twins’ racist rant is the self-satisfied tone. They think they’re breaking a taboo, bravely challenging convention by scapegoating white men. Give us a break. Antiwhite and antimale bigotry couldn’t be less courageous or more clichéd. It’s been a constant feature of academic discourse for decades and of journalistic writing for years. It has been the dominant theme of political coverage since Barack Obama’s re-election.”