PORTLAND, Ore. (AP) — Federal authorities on Saturday forced demonstrators away from a plaza near a federal building as dueling demonstrations in Portland by right-wing and left-wing protesters turned violent. The area includes county and federal buildings and has been the site of numerous recent protests. Local media reports say protesters blocked streets, threw things at each other and got into fights starting outside the Multnomah County Justice Center. Clashes moved to other areas as the protest continued. The Justice Center in recent weeks has been the target of left-wing protesters who have engaged in nightly clashes with police. Violent demonstrations have gripped Portland for months following the police killing of George Floyd in Minneapolis.