Violent Protests Break Out at UC Berkeley

UC Berkeley officials canceled a speech by self-described right-wing internet troll Milo Yiannopoulos after a protest of his appearance involving more than 1,000 people turned violent.
2:03 | 02/02/17

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Transcript for Violent Protests Break Out at UC Berkeley
But we'll begin with those violent protests erupting at uc Berkeley. The campus locked down as more than a thousand rallied against the appearance of a controversial editor from Breitbart, milo yiannopoulos. They escalated and the speech was canceled and president trump weighed in again. Kayna Whitworth has all the latest from Berkeley. Reporter: Good morning. It was a terrifying night. Campus police issuing a shelter in place order after college Republicans invited milo yiannopoulos to speak. Now, behind me this is a police generator that was knocked over and set on fire when these protests turned into a riot. Overnight, mayhem on campus. The university of california-berkeley erupting in flames as over a thousand came out to protest an appearance by the self-described right wing internet troll milo yiannopoulos. We will not tolerate racism or sexism or hate crimes and violence. He is a fascist and Berkeley did not welcome him. Reporter: At least six people injured including this trump supporter who was pepper sprayed. The university canceling the speech. Riot police even retreating to the building for safety. You can hear them urging the crowds to leave. I think we have a right to say that we don't want him here. And -- Reporter: The standoff intensifying as protesters lit fireworks. Police firing back. It's going too far right now. This is uncalled for. This is not going to get no message around. Reporter: Yiannopoulos an editor for Breitbart news and avid supporter of president trump responding on Facebook posting this video. Because I was threatened. Might take some people with him. They have to shut it down at all costs. Reporter: President trump taking to Twitter asking the question no federal funds? Uc Berkeley does not allow free speech. Thank you, kayna. President trump escalating

This transcript has been automatically generated and may not be 100% accurate.

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