Libertarians are victims of their own success, and the rest of us are victims of the few remaining libertarians, who – like CrossFitters, militant atheists, and vegans – can’t seem to shut up about their obsession. The fact is that conservatism has absorbed most of libertarianism, at least the useful parts of it. I don’t have much use for a conservative who has no libertarian tendencies, but I’ve got no use at all for the self-identified libertarians we see all too often today. They are a bunch of rigid scolds with zero conception of how the world works but no...