A bystander was fatally shot after security members at the demonstration confronted a man who was running toward the crowd with an AR-15-style rifle, the police said.

Salt Lake City police say a demonstrator who was shot has died and that the bullet that killed him appears to have been fired by one of the demonstration's peacekeepers.

Three dozen protesters were arrested Saturday night in Denver on investigation of charges ranging from blocking streets to resisting arrest, according to the police department.