Remember when the Times lectured us on civility and warned of “eliminationist rhetoric” from the right? It was largely bunk. But here we have a Times columnist likening his political critics to vermin. To be sure, he is not actually going to exterminate them, as others who’ve used such metaphors down through history have been known to do. Blow’s comments, that is, are not dangerous. But they are profoundly disturbed and indecent.