Campus police at UC Berkeley on Friday announced the arrest of 28-year-old Zachary Greenberg in a felony assault on a conservative activist, a video of which has since gone viral and sparked right-wing outrage.

In the latest case of UC Berkeley being vilified by the right for being a place hostile to free speech if that speech is conservative, the Feb. 19 incident spread far and wide and even garnered a mention on Twitter this week by Donald Trump Jr. after the story received its requisite Fox News coverage.

The incident on Sproul Plaza involved a shouting match that turned physical between the man identified as Greenberg, and an activist/recruiter for the right-wing group Turning Point USA, Hayden Williams.

Berkeleyside reports that campus police made the arrest Friday, and that Greenberg will be arraigned on Monday. He's been arrested on suspicion of "assault with a deadly weapon other than a firearm with force likely to produce great bodily injury."

UCPD previously issued a statement saying that the suspect, who was not yet named, was not a student at UC Berkeley and was not affiliated with the university.

Conservatives have been quick to rally behind the latest incident of free-speech loving Berkeley apparently hating conservatives. Turning Point USA founder Charlie Kirk issued a statement last week saying, "A conservative is the victim of a vicious attack, and no one is held responsible? Where is the media?" As the Washington Post reports, the complicated piece of this is that neither of the men involved in the incident were students at UC Berkeley — Williams, the victim, was just there helping the campus chapter of Turning Point with a recruiting drive. But those on the right felt the response time of the campus police was too slow.

Below, Sean Hannity's coverage of the incident from last week, including an interview with Williams.

Related: A conservative activist was punched in the face at UC Berkeley. The response enraged the right. [Washington Post]