At least two people were arrested in Seattle and a police officer is in the hospital Sunday after a march through downtown devolved into property damage and looting. Police said Sunday evening the demonstrators had broken out several windows of the East Precinct. The demonstration started between 2 and 3 p.m. near the intersection of 3rd Avenue and Pine Street. Around 2:30 p.m., Seattle journalist Katie Daviscourt tweeted a video of a crowd of people outside an Amazon Go building. Several people were seen spray-painting the building while others tried to smash the windows. Seattle police tweeted shortly before 5 p.m. that the crowd had continued to march on Pike Street from downtown and two people had been arrested outside of the West Precinct. Police said demonstrators had thrown rocks, bottles, and other items at officers and at least one officer had been transported to the hospital.

Supporters of the Denver police force clashed with a much larger anti-police protest in the city on Sunday, with marchers left bloodied and brawling in the streets. Randy Corporon, an attorney who organized the 'Back the Blue' pro-police march, said Sunday that Denver Police Chief Paul Pazen asked him to reschedule or move the pro-police rally, expressing concern that police officers would be put in harm's way by the event. The small 'Back the Blue' pro-police crowd had gathered at the Civic Center park, congregating in the amphitheater, where a band had been playing music to them. But anti-police protesters also gathered in the area, banging drums, blowing whistles, clanging pots, and shouting obscenities to drown out the pro-police rally, The Denver Post reported. Scuffles broke out among individuals on both sides. Several people were caught on camera throwing punches in isolated disputes. Law enforcement officers attempted to form a line around the two groups, but could not completely separate them.