Portland Police: It's a riot
Newser reports the designation came when protesters breached a fence surrounding the city's downtown federal courthouse, where US agents have been stationed.
In a tweet, local police said the violent conduct of demonstrators has created a 'grave risk of public alarm.'
Protesters paused outside a hotel where federal agents are staying, chanting “Feds go home” and yelling the names of African Americans killed by police.
Police demanded people leave the area, and threatened that those who fail to do so may be arrested or subject to teargas and impact weapons.