At Sacramento State, a discussion on politics escalated into a violent incident, with one student attacking another — all of it captured on cellphone video.

The university responded quickly to the incident, which began with a verbal fight over comments someone posted on Facebook. Then, the war of words escalated into something physical.

“I was coming out of the class through those doors right here,” Floyd Johnson explained to KCRA 3. Johnson, a senior and political science major at Sacramento State, said he was assaulted by another student after class Friday.

“What have I done?” Johnson asks the student in the video.

“You’re harassing me,” the student proclaims on the video, before slapping at Johnson.

“Whoa, that is not OK,” Johnson says in response. “That is not OK. You cannot do that, that is battery, that is assault.”

Johnson, a member of the Sacramento State College Republicans, said the dispute was over the issue of abortion. In the video, the aggressor appears to make a direct threat against Johnson.

“You’re going to end up f—— dead,” the student states on camera.

Someone on campus quickly intervenes and tries to get everyone to calm down.

“Take a deep breath,” the mediator says. “You have every right to report.”

Johnson did file a report with the university police against the other student, identified as Keaton Hill. Hill told KCRA 3 he is also a senior and a political science major at Sacramento State.

An email from the university says Hill has been directed by the school not to contact Johnson in any way.

University President Robert Nelsen sent out a campuswide email in response to the incident.

“In today’s increasingly tense political climate, we must care for each other and treat one another with respect, despite our differences,” Nelsen said in the email.

Full story at KCRA.