They're at it again. Fresh off being flushed out of downtown city parks and other public areas, Occupy Portland protestors clashed with police Thursday.

A group affiliated with Occupy in Portland and other cities called N-17, November 17th, has threatened to forcibly occupy and shut down banking institutions, chain doors, and even commit vandalism.   Police are warning people to be on the lookout for these protestors, and the possibility for violence or injury to citizens could be imminent.