We feel bad for the janitors who had to clean up after the latest low from Rutgers University’s champions of tolerance.

To disrupt a guest’s speech, a dozen kids smeared themselves in fake blood — splattering other students and much of the room in the process — while shouting “black lives matter” and other deep slogans before storming out.

Several dozen more protesters remained, to keep up the harassment (“This man represents hatred”) throughout.

Fine, the speaker was a bit of a flamethrower — Milo Yiannopoulos, an often-rude writer for Breitbart News. But he has his own multicultural bones, as a gay Brit.

The school paper, The Daily Targum, chatted with a lead protester. “Freedom of speech is a responsibility,” junior Nyuma Waggeh explained. “You should use your privilege to be responsible for one another.”

That’s it: Shows how precious the “privilege” is by shouting down another group’s invited guest and making a big mess for someone else to clean up.

Rutgers, Waggeh also claimed, “should not be inviting anyone like [Yiannopoulos] because what we stand for is inclusion and diversity. If a speaker makes someone feel unsafe or uncomfortable, then they should not come to campus.”

Yep, that’s what college is all about: feeling comfortable. No greater threat to that than the guest’s oh-so-unsafe topic: “How the Progressive Left is Destroying Education.”

Were the kids just trying to prove his point?