June 15 (UPI) -- A protest outside of an Immigration and Customs Enforcement facility in Oregon has been declared a riot by the Portland Police Bureau. Police said in a statement early Sunday morning that the massive demonstration was attended by some "tens of thousands" of protesters, and described as "peaceful" throughout the afternoon on Saturday. But shortly before 6 p.m. on Saturday evening, a federal officer was reported to have been injured by the crowd. And around 8 p.m., police