In a recent speech, Trump painted a picture of humanoid predatory animals hell-bent on torturing, killing, and raping beautiful, innocent teenage girls. Trump’s speech should not be regarded as the return of the superpredator idea, because the idea that young Black and Latino males are roving, predatory beasts never really disappeared.

Why would anyone believe that the symptoms typically associated with AIDS are the product of supernatural practices like sorcery, when a perfectly good and comprehensive scientific explanation of HIV/AIDS is available?