Occupy Oakland: Police arrest 300, officials decry 'illegal activity' Oakland police made more than 300 arrests during a tense Occupy Oakland protest Saturday, with city officials expressing frustration and outrage at the tactics of some demonstrators. City Administrator Deanna Santana said the city "will not be bullied by threats of violence or illegal activity. ... Other city officials said the protests prevented police from dealing with other emergencies. "This particular faction of Occupy ... they're very violent, and I'm going to be asking for a lot more mutual aid," Mayor Jean Quan told the Oakland Tribune. They are hurting the neighborhoods by continuing to do this on Saturday nights. Police in riot gear faced off with demonstrators Saturday afternoon at a rally near City Hall. Hundreds of protesters then marched toward the vacant Henry J. Kaiser Convention Center, where they began tearing down the fencing around the auditorium, and police moved to stop them. By 3 p.m., an area to the west near the Oakland Museum of California was declared an illegal assembly as a thick line of officers attempted to disperse the protesters. Police fired tear gas and flash grenades, and some demonstrators responded by throwing rocks and bottles, according to news reports. In a flier distributed at the starting march, organizers said the movement, "like millions of people, needs a home. Because thousands of buildings sit empty -- for the simple reason that they exist to enrich the 1%. Because with our own space we can create a social center that begins to meet people's needs -- our needs -- and work to build a world based on humanity and community, not profit.