Occupy Oakland: violence as police clash with protesters

A police officer attempts to control the scene after being surrounded while making an arrest at an "Occupy Wall Street" demonstration in response to an early morning police raid which displaced Occupy Oakland's tent city in Oakland, California October 25, 2011.

More than 1,000 people marched on Oakland city hall to voice anger over scores of arrests at an "Occupy Wall Street" camp. Protests turned violent.