BERKELEY (CBS SF) — A pro-Trump group known as the Proud Boys sponsored the protest that descended into bloody violence at Berkeley’s Civic Center Park on Saturday. They say they have a right to bring their views to liberal Berkeley.

According to the description on their Facebook page, “The Proud Boys are a fraternal organization founded on a system of beliefs and values of minimal government, maximum freedom, anti-political correctness, anti-racial guilt, pro-gun rights, anti-Drug War, closed borders, anti-masturbation, venerating entrepreneurs, venerating housewives, and reinstating a spirit of Western chauvinism during an age of globalism and multiculturalism.”

Today was an enormous victory! I could not be more proud or grateful for every one who attended the event! This was the turning point! — Rich Black 🇺🇸🇮🇱 (@boldandproper) April 15, 2017

.@BasedStickMan_ says "Berkeley got sacked." To Seattle, Boston, and other cities: "We're coming for you." pic.twitter.com/PPyN44IBKM — Shane Bauer (@shane_bauer) April 15, 2017

Saturday’s melee in Berkeley, was similar to recent clashes between left and right-wing factions in the recent past. There is almost a script to how these rallies and counter-protests go in Berkeley.

KPIX 5 asked Tom Marcianno of Fremont, who took part in Saturday’s rally, if his group was intentionally trying to provoke a reaction by bringing a pro-Trump message and gathering to the heart of liberal Berkeley.

Q: Coming to Berkeley, isn’t that like poking the bear?

A: Well, it is in a way, but, we’re not doing it to be gleeful about it or to deliberately upset people who are against us. We have every right to be here.

Q: But you are going to upset people by your presence.

A: But, that’s their problem. They seem to be upset about a lot of things that are completely irrational. We don’t have an answer for that. If they want to hold a rally where I’m from, they’re welcome to do it. There might be a counter demonstration But, we’re not going to stop them from exercising their freedom of speech.

EDITOR’S NOTE — Strong Language, Violence



According to Berkeley police, the organizers did not seek or obtain a permit for Saturday’s rally, but they “widely advertised the rally.”

RELATED: Viral Video Shows Student White Supremacist Sucker-Punch Berkeley Anti-Trump Protester

In all, some 20 people were arrested, and “more arrests will be pursued” when police review footage posted on social media.

Charges include assault with a deadly weapon and other felony assaults.

IMAGES: Violent, Bloody Day In Berkeley

Police said 11 people suffered injuries and required medical treatment. Seven were taken to local hospitals.

READ: Protest Turns Violent, Bloody As Pro-Trump, Anti-Trump Camps Clash In Berkeley

A conservative protestor squares off with a anti-fa protestor during the Patriots Day Free Speech Rally in Berkeley, California, April 15. pic.twitter.com/m6Mv5hwaef — TRUMP MOVEMENT (@TRUMPMOVEMENTUS) April 16, 2017

Similar violence broke out last month at the very same park between pro-Trump and anti-Trump protesters. Ten people were arrested.

In February, then-Breitbart editor Milo Yiannopoulos was set to speak to UC Berkeley. That event was shut down in advance because it was met with similar protests. Protesters threw rocks, broke windows and set fires on campus.