It turns out that now-suspended John Jay College professor Michael Isaacson’s tweet about teaching “future dead cops” was no isolated incident.

Which ought to make it easier for officials to decide what to do with him.

The school put Isaacson — an adjunct economics professor, antifa leader and self-professed anarchist — on administrative (that is, paid) leave after his two-week-old tweet declaring it “a privilege to teach future dead cops” was reported.

John Jay’s student body is made up largely of those planning law enforcement careers, including police work.

But while school president Karol Mason condemned the “abhorrent” tweet (though never mentioning Isaacson’s name), she stressed that she was suspending him only to protect students and faculty who had “received threats.”

And since then, searches of Isaacson’s Twitter feed have uncovered more bile dating back nearly two years. Like this, from Dec. 5, 2015: “The solution to American gun violence is more dead cops.”

Or this, just a week before the tweet that got him suspended: “What’s even the point of a cop that isn’t dead?”

He also tweeted his hope that a student would defend black revolutionary Assata Shakur, a k a Joanne Chesimard, by “saying she didn’t kill a cop so I can say she probably did and it’s good.”

As an online petition demanding his permanent removal notes, Isaacson “has continually favored the notion that ‘dead cops’ would make the country a better place.”

Frankly, he has nothing constructive to teach anyone — certainly not at John Jay. The First Amendment gives him the right to spew his venomous drivel, but it doesn’t protect him from any consequences.

Time to cut this dirtbag loose now.