Trump voters had a powerful case to make that they had been thrice betrayed by the nation’s elites. First, after 9/11, when they had borne much of the brunt of the wars in Iraq and Afghanistan, only to see Washington fumble and then abandon the efforts. Second, after the financial crisis of 2008, when so many were being laid off, even as the financial class was being bailed out. Third, in the post-crisis recovery, in which years of ultralow interest rates were a bonanza for those with investable assets and brutal for those without.

Oh, and then came the great American cultural revolution of the 2010s, in which traditional practices and beliefs — regarding same-sex marriage, sex-segregated bathrooms, personal pronouns, meritocratic ideals, race-blind rules, reverence for patriotic symbols, the rules of romance, the presumption of innocence and the distinction between equality of opportunity and outcome — became, more and more, not just passé, but taboo.

It’s one thing for social mores to evolve over time, aided by respect for differences of opinion. It’s another for them to be abruptly imposed by one side on another, with little democratic input but a great deal of moral bullying.