Members of Antifa smashed out the windows of a U.S. Marine Corps recruiting office during a violent protest in Berkeley, California, on Sunday.

During the protest, Antifa also set a car on fire and damaged 21 other vehicles in city, slashing some of the tires and bashing out windows, Fox News reported. The group also allegedly lit trash cans on fire, adding to the destruction across the city in its fight against members of the “alt-right.” Throughout the day, police arrested 20 people who were allegedly involved in the violence and vandalism.

WATCH:

VIDEO: Antifa smashes the windows of Shattuck Ave US Marine Corps Recruiting office in #Berkeley #berkeleyprotests #Antifa pic.twitter.com/SZH5d97CjV — Ford Fischer (@FordFischer) August 5, 2018

No police were around as the black bloc traveled down the street, and a handful used hammers to smash the windows of Shattuck Ave US Marine Corps Recruiting office. pic.twitter.com/YeBwEJvopV — Ford Fischer (@FordFischer) August 5, 2018

Berkeley police tweeted out a photo of weapons they confiscated from the protest, including knifes, metal poles, pieces of wood and mace.

We are confiscating weapons and making arrests. pic.twitter.com/YisxhW4FM0 — Berkeley Police (@berkeleypolice) August 5, 2018

We have made 17 arrests, and, if necessary, we will continue to make more. We’re also continuing to confiscate weapons. pic.twitter.com/xJVYrdD2ag — Berkeley Police (@berkeleypolice) August 5, 2018

After the windows of the Marine recruitment office were broken, witness and filmmaker Ford Fischer told Fox News that Antifa threatened him to flee the scene. (RELATED: Antifa Prepared To Fight Patriot Prayer Protesters With ‘Militant Resistance’)

“After I filmed the Antifa break the Marine Corps office window and throw a torch into a dumpster, one of them called a few over to confront me,” Fischer said. “They basically told me to leave, implying attack if I didn’t. I left. ‘Get the f*** back. Cops aren’t here. They won’t help you.'”

Neither group received the necessary permits to host rallies in the city and authorities banned masks as well as a list of objects that could have been used as weapons Friday.

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