A riot broke out at UC Berkeley on Wednesday evening after protests against a Milo Yiannopoulos speech turned violent.

Yiannopoulos, the editor of Breitbart, was scheduled to give a speech at The Martin Luther King Jr. Union but the university was forced to cancel the speech and evacuate Yiannopoulos due to escalated violence.

Rioters reportedly used firecrackers, smashed windows, and assaulted several attendees with weapons. A Donald Trump supporter wearing a ‘make bitcoin great again’ hat was pepper sprayed after giving an interview to a local news station. Trump supporters were also reportedly beaten with bats and metal rods.

Demonstrators were protesting what they considered to be hate speech by Yiannopoulos, who has stirred audiences with his controversial views on feminism, Islam, and freedom of speech.

One of the attendees at UC Berkeley was none other than UFC veteran and former Strikeforce middleweight champion Jake Shields. The former UFC title challenger, who holds wins over some of the best competitors in MMA, posted a video of a heated argument between him and a group of rioters.

The multiple-promotion MMA champion claimed to have helped a ‘guy being jumped by thugs’ at the protest.

“You guys have your faces covered, you’re attacking people, you’re being fucking fascists,” Shields told a masked assailant in the below video.

The aftermath of me helping a guy after being jumped by thugs. The police and 100's of civilians stood and watched. pic.twitter.com/7hN2iJ4kkf — Jake Shields (@jakeshieldsajj) February 2, 2017

Shields, who made his professional MMA debut in 1999, competes under the World Series of Fighting banner and lost in a welterweight championship bout against ex-UFC title challenger Jon Fitch at WSOF 34 in December.

President Trump has since threatened to defund Berkeley after the cancelation of Yiannopoulos.