The video starts as many attack ads do: an ominous voice invoking fear. In this case, though, the video doesn’t target any particular candidate but an entire political party: Democrats. And the subject isn’t one that typically induces terror, like crime, but education.

White House Chief of Staff Ron Klain violated the Hatch Act and was warned not to do so again, according to a document obtained by The Post. The Office of Special Counsel said in a letter dated Wednesday that Klain, a prolific Twitter user, ran afoul of the law.