Transcript for Occupy Oakland: Police Clash
To that showdown protesters and police clashing in Oakland California overnight -- -- chaos erupting in the street. Both sides bracing for another round tonight and here's ABC's every -- Oakland city center was empty today just hours after police -- battling with protesters. We're still threatening to regroup tonight. That night erupted would leave -- Moved -- using balance of tear gas to break ground. This protestor overwhelmed by this move. Police arrested 100 of them 1000 occupy -- and protesters. Including this young woman who was tossed to the ground and -- on the spot. You're sure you're not the protesters fighting back and refusing to budge they start their -- in the crowd last spring's. One of those injured a marine and two time Iraq War veteran who sustained a skull fracture after being hit in the head. Police say it was -- in self defense. We were. In a position where we had to deploy. Gas in order to stop the crowd and people from -- us with bottles and rocks. The situation escalated quickly after police tore down a tent city outside City Hall. Oakland officials said that after nearly three. I had become dangerous and sanitary. A recent poll shows less than half of Americans support the protesters. Landlords who believe money and wealth should be more evenly. -- -- -- -- -- -- Weeks after new York city police just sort of clearing up. Atlanta crackdown last night to. Police on horseback swat teams in riot gear fifty protesters arrested some dragged out and plastic handcuffs. The campsite cleared within hours would just across the Bay Bridge -- San Francisco shows no signs of slowing down. Many of the protesters here tell us they are not afraid of the police. And we'll do whatever they have to do to protect themselves even if it means repeating a scene like last night.
This transcript has been automatically generated and may not be 100% accurate.