(Screenshot via CNN.)

University of California, Berkley canceled Breitbart News editor Milo Yiannopoulos’ scheduled speaking engagement on Wednesday evening after on campus protests turned violent.

President Donald Trump took to Twitter to defend Yiannopoulos’ right to speak on campus and threatened to cut federal funding for the school.

If U.C. Berkeley does not allow free speech and practices violence on innocent people with a different point of view – NO FEDERAL FUNDS?

— Donald J. Trump (@realDonaldTrump) February 2, 2017

CNN reports that the protest started peacefully but became violent after “150 masked agitators” threw Molotov cocktails, commercial grade fireworks and rocks at police which started fires on campus.

More than 1,500 protesters were on campus that evening and six people were injured.

Yiannopoulos’ speech was canceled two hours before his appearance and he was removed from campus.

“We condemn in the strongest possible terms the violence and unlawful behavior that was on display and deeply regret that those tactics will now overshadow the efforts to engage in legitimate and lawful protest against the performer’s presence and perspectives,” UC Berkeley said in a statement.

In an interview with “Tucker Carlson Tonight,” Yiannopoulos blamed UC Berkley for the protests.

“No one’s safety is at risk from different opinions,” Yiannopoulos says. “No one’s physical safety is endangered by political ideas from a speaker on campus, but universities have sort of allowed this stuff to happen, and even in some cases encouraged it.”

Yiannopoulos has been embarking on a college campus tour for months. His appearance at the University of Maryland, College Park was canceled after Terps for Trump, who booked his appearance, was unable to raise funds for a last minute security fee.

“I annoy the feminists and the Black Lives Matter guys probably almost as much as Trump does, certainly on college campuses,” Yiannopoulos continued. “So, they go for the next best thing. They go for the person they think they can scare. Well, they don’t scare me. I will continue to give college talks until the day I drop dead.”