PORTLAND, Ore.—U.S. Attorney Billy J. Williams announced today that seven people have been arrested and face federal charges for their roles in weekend riots at the Mark O. Hatfield U.S. Courthouse in Portland.According to court documents, since May 26, 2020, protests in downtown Portland have regularly been followed by nightly criminal activity including assaults on law enforcement officers, destruction of property, looting, arson, and vandalism.Rowan Olsen, 19, of Portland, is charged with disorderly conduct, creating a hazard on federal property, and failing to obey a lawful order; Shant Singh Ahuja, 28, of Oceanside, California, is charged with destruction of...