Police moved into the Occupy Oakland encampment on Monday morning, arresting protesters who remained despite an eviction notice from the city.

Occupy Wall Street demonstrators face off with police at an encampment in Oakland, Calif., Nov. 14, 2011. (Paul Sakuma/AP)

The police cleared out the tents and declared the plaza a crime scene. The eviction went smoothly, despite fears that it could turn into another battle between the protesters and the police.

Mayor Jean Quan suffered sharp criticism in October after violent clashes with the police led to a war veteran, Scott Olson, suffering from a skull fracture. Olson became a national rallying cry for the protests and was only just released from the hospital this week.

Quan’s legal advisor Dan Siegel quit in protest early Monday morning before the raid, writing on Twitter:

No longer Mayor Quan’s legal advisor. Resigned at 2 am. Support Occupy Oakland, not the 1% and its government facilitators.Mon Nov 14 15:17:13 via Twitter for iPadDan Siegel

The protesters knew the raid would likely come Monday morning. Tensions with city officials flared in Oakland once more last week when a man, Kayode Ola Foster, was shot and killed near the protest site.

Other Occupy protests sites around the country are experiencing similar conflicts with city governments. The Portland mayor has said there has been a sharp increase in assaults at the Occupy Portland camp and ordered it to be shut down. Occupy Philadelphia protesters expect to be evicted Monday night. (Elizabeth Flock is on the scene in Occupy Philadelphia. Follow her reports here.)

The crackdown did not seem to dissuade some protesters. “They’ll come and kick us out, we’ll move back in,” said one man livestreaming the eviction in Oakland.

A call went out Monday afternoon that protesters would be back to reclaim the park by 9 p.m. EST.

Watch live streaming video from globalrevolution at livestream.com