“White liberals have warmer attitudes toward other races than they do toward their own,” Brooks ­insists.

The bizarre trend helps explain why attacks on “white privilege” are now required for candidates to prove their racial bona fides. An extreme example involves Beto O’Rourke, a wealthy white candidate from Texas who made his case for reparations by declaring that he and his wife are the descendants of slave owners. Even Senate Minority Leader Chuck Schumer, who used to claim he was a moderate, now says he will support a Booker bill to study how reparations for slavery could be put into practice.

While all this sounds like an ­exclusive appeal to minority voters, it is also just as likely to be aimed at those whites embarrassed by their race.

Of course, it is also a reaction to Trump, as is everything in politics these days. With apologies to Reggie Jackson, Trump is the straw that stirs the drink.

Where you stand on him is the key organizing principle of our time. If he is for it and you are against him, you must be against his policies even if you previously supported them.