Ben Margot/AP

Controversial right-wing commentator and Breitbart editor Milo Yiannopoulos was set to give a speech at U.C. Berkeley, causing what started as peaceful protests to erupt into violence after 150 black-clad, masked agitators showed up throwing commercial-grade fireworks and rocks at police. The group is part of an anarchist group known as “Black Bloc,” according to UC Berkeley spokesman Dan Mogulof, and has been “causing problems in Oakland for years.”

Due to the violent turn the protests took, U.C. Berkeley cancelled the speaking event about two hours before it was to take place, and removed Yiannopoulos from the campus. Meanwhile, more than 1,500 protesters chanted “No safe space for racists” and “This is war,” as metal barriers were torn down, fires were set and a Trump supporter was sprayed in the face with pepper spray. Six people were injured during the violent protests, but no arrests were made.

Of course, Donald Trump took to Twitter to weigh in on the protests, threatening to cut federal funding to U.C. Berkeley over the matter, claiming that the university does not allow free speech.

Violence aside, it seems Trump may have forgotten that protests are also a matter of free speech. But we digress.