And here we come to a second curiosity in the preening and ecstatic outrage over the president’s comment. Everyone, near enough, knows that he was telling a home truth. It was outrageous not because he said something crude that was untrue. Quite the contrary: it was outrageous precisely because it was true but intolerable to progressive sensitivities.

In other words, the potency of taboo is still strong in our superficially rational culture. There are some things—quite a few, actually, and the list keeps growing—about which one cannot speak the truth or, in many cases, even raise as a subject for discussion without violating the unspoken pact of liberal sanctimoniousness.

Donald Trump, of course, does this regularly, delightedly. Hitherto, his brazenness has only endeared him to his base and driven his critics mad. Perhaps it will be different this time. Maybe the angry censors will descend en masse in effective indignation and drag him from the stage. Again, though, I wouldn’t count on it. Trump’s Haiti moment is cut from the same script as Trump’s “Rosie O’Donnell is a fat pig” mot. Uncouth. Crude. But was it untrue?