Never sated by the amount of attention that he gets and congenitally inclined to cast himself in the center of everything, President Trump tweeted about the most stunning of Tuesday’s primary results — New York Representative Joseph Crowley’s defeat by a 28-year-old newcomer named Alexandria Ocasio-Cortez — and suggested that Crowley’s comeuppance reflected his insufficient deference and kindness to Trump.

I can say with great certainty that their relationship is not the first, second or third explanation for what happened to Crowley, the fourth-highest-ranking Democrat in the House. But I can’t tell you definitively what the moral of the story is, because there are many possible lessons here. Democrats should and will spend the weeks ahead analyzing them carefully.

Crowley, 56, has been in Congress for nearly two decades and, since 2013, has represented New York’s 14th Congressional District, which includes parts of the Bronx and Queens. He hadn’t even drawn a primary challenger since 2004.

He’s the chairman of the Queens County Democratic Party. His name came up frequently in discussions about who might succeed Nancy Pelosi as the party’s leader in the House. In other words, he’s the establishment incarnate.