MICHAEL GOODWIN: Donald Trump’s ‘they’re after you’ tweet says it all.

Critics regard it as fear-mongering, and there is no denying that the president wanted to rally his base, lest it be discouraged by the day’s events.

Yet Trump’s oblique reference to a weaponized and powerful adversary is hardly ­unfounded, with a partisan, flimsy impeachment the latest example. The tweet’s siren call to believers is a shorthand way of saying that impeachment is just a continuation of the endless attacks against us.

Indeed, his presidency effectively begins with a prophecy of those attacks, one that came 17 days before Trump took the oath.

“Let me tell you: You take on the intelligence community — they have six ways from Sunday at getting back at you,” Sen. Chuck Schumer said on MSNBC.

It was an incredible thing to say in a nation where the people are supposedly sovereign, but soon it would become clear that Schumer knew what he was talking about, which still raises questions.