PORTLAND, Ore. (AP) — Police in Portland, Oregon, declared a riot as protesters demonstrated outside a law enforcement building early Sunday, continuing a nightly ritual in the city. News outlets report officers used crowd control munitions to disperse the gathering outside the Penumbra Kelly building. Police say protesters had thrown “softball size” rocks, glass bottles and other objects at officers. Police also reported vandalism at the building. The actions came after what started as a peaceful protest late Saturday. Violence had erupted earlier Saturday afternoon when a small group of alt-right demonstrators traded paint balls and pepper spray with counter-protesters.