A professor at the University of California in Santa Barbara (UCSB) has been accused of stealing a pro-life sign and assaulting a teen pro-life activist on March 4.

Thrin Short, 16, shot a video (below) that reportedly begins after the large pro-life sign, which included graphic photos of aborted fetuses, was stolen.

Thrin and her sister Joan, 21, were handing out pro-life pamphlets during a campus event, which was organized by the group Survivors of the Abortion Holocaust.

According to Thrin, UCSB Associate Professor Mireille Miller-Young approached them and argued with her in the “free speech zone” of the campus.

“Before she grabbed the sign, she was mocking me and talking over me in front of the students, saying that she was twice as old as me and had three degrees, so they should listen to her and not me,” Thrin told FoxNews.com. “Then she started the chant with the students about ‘tear down the sign.’ When that died out, she grabbed the sign.”

After Miller-Young allegedly took the sign (with the help of some unidentified students), Thrin, her sister and two students followed them with the video camera.

“I may be a thief, but you’re a terrorist," yelled Miller-Young, reports Campus Reform.

Miller-Young and Thrin later had a confrontation when the professor was taking the sign up in an elevator.

“I explained how I had been trying to keep the elevator door open with my foot, because I thought the police would be there any second, and that’s when she pushed and grabbed me,” claimed Thrin. “She then got off the elevator and tried to pull me away from the elevator doors so the others could get away with the sign.”

UCSB spokesman George Foulsham told FoxNews.com, “The university is aware of the incident and it is being reviewed by the appropriate offices. It is university policy not to discuss personnel matters.”

Thrin wants Miller-Young prosecuted for the alleged assault.

Sources: FoxNews.com and Campus Reform