Smoke bombs tossed by protesters in Berkeley. #abc7news pic.twitter.com/FRFTrZ3Q8m — Leslie Brinkley (@lrbrinkley) March 4, 2017

A pro Trump marcher got hit in the head, kicked, hurt #berkeleyprotests pic.twitter.com/6ENW4ruVue — Lisa Amin Gulezian (@LisaAminABC7) March 5, 2017

Police move in and make arrests. Berkeley #abc7news pic.twitter.com/dHT7hmfp5R — Leslie Brinkley (@lrbrinkley) March 4, 2017

Woman detained @ berkeleyprotest. Baseball bat in her bag pic.twitter.com/ksMSFcRwb0 — Lisa Amin Gulezian (@LisaAminABC7) March 5, 2017

Anti Trump protesters block traffic on MLK & Addison Berkeley. Pepper spray and fists flying in crowd. #abc7news pic.twitter.com/IZxAMLU2E6 — Leslie Brinkley (@lrbrinkley) March 4, 2017

Trump supporters ask Berkeley police to intervene. Say people are getting hit in the head. #abc7news pic.twitter.com/PKVgKAlorD — Leslie Brinkley (@lrbrinkley) March 4, 2017

Violence has started at #March4Trump rally in #berkeley - couldn't see who threw first punch. pic.twitter.com/kqP39CUoWw — Aaron Davis (@BaronBavis) March 4, 2017

Trump supporters in Berkeley #abc7news clash with anti Trump activists. Police standing by pic.twitter.com/KEk9Uix7DX — Leslie Brinkley (@lrbrinkley) March 4, 2017

Police geared up on perimeter of civic park Berkeley as fights break out at protest. #abc7news pic.twitter.com/oNvJpX8aLm — Leslie Brinkley (@lrbrinkley) March 4, 2017

AntiTrump activist says trump supporter hit her on the head with a flag #abc7news pic.twitter.com/Hp6aCtN8FR — Leslie Brinkley (@lrbrinkley) March 4, 2017

BERKELEY, Calif. (KGO) -- Arguments heated up in Berkeley as demonstrators on both sides of the debate over President Donald Trump's policies clashed Saturday afternoon.People participating in the "March 4 Trump" demonstration to show support for President Trump were met by members of the group "By Any Means Necessary," and other protesters, which had planned a counter-demonstration.Berkeley police officers were keeping a close eye on the demonstrations, but video shared on Twitter showed shouting matches erupting and getting physical between the two groups.Protesters threw smoke bombs into the crowd.Police eventually moved in to make arrests around 3:15 p.m. Video showed officers on motorcycles chasing down a female protester before she was arrested.A group of the anti-Trump protesters moved onto the street to block traffic on Martin Luther King Way at Addison Street. Pepper spray and fists were flying in the crowd.BART trains were temporarily not stopping at the Downtown Berkeley Station due to the police activity. Click here for continuing coverage on President Trump.