I recently downloaded a copy of a book from a white-supremacist website (sorry, no links here). It claims that, because of evolutionary forces at work in Africa, black people have smaller brains, lower IQs, more sex hormones, higher rates of crime, and are worse parents than whites. (It also reports, with what seems like a touch of sour grapes, that black men have larger penises.) Why did I do this to myself? Because the author, the late J. Philippe Rushton, had just been cited in an op-ed appearing in the New York Times as an authority on—wait for it—morality.