Police arrest 10 people at an "Occupy Portland" protest on Monday night.<br/> <br />About 100 protesters were marching against what they called acts of police brutality.<br/> <br />The demonstration shut down streets, blocked traffic and caused minor property damage in Oregon's biggest city.<br/> <br />Police said that shortly after the march began there was a stand-off between protesters and riot police.<br/> <br />Police then cleared the streets and the crowd began to disperse.<br/> <br />During this time small skirmishes broke out among various factions within the "Occupy" group.<br/> <br />Travis Brecher, Reuters
