The officer suffered what police described as a non-life-threatening injury and was taken to Harborview Medical Center.
A Seattle police bicycle officer assigned to Tuesday’s Sounders FC championship parade and march was injured when he was pinned under the tire of a trolley carrying team representatives through Seattle.
The officer and trolley collided at Queen Anne Avenue North and Mercer Street. He was taken to Harborview Medical Center with injuries that were not life-threatening, said Sgt. Sean Whitcomb, a police spokesman.
Peter Choi, a 22-year-old Seattle Pacific University student,  was heading to work when he saw the parade and began filming with a cellphone. Choi happened to capture the officer being pinned on video.
The video shows the officer’s lower body caught beneath a tire and in the wheel well of the bus.
“He literally got stuck under the bus, and he couldn’t move,” Choi said. “He was breathing. He was talking. Everything like that.”
Choi said police swarmed the officer and pushed parade-goers away as they cleared the area. Sounders FC Academy players were seen walking away from the bus after the incident.
At the rally, Mayor Ed Murray acknowledged the officer’s injury.
“Let’s give a big cheer for what the Seattle Police Department does for the people and city of Seattle,” he said.
The Sounders were celebrating their MLS Cup victory Tuesday in Seattle. The march began about 11 a.m. at Westlake Park and continued to Memorial Stadium. Fans followed trolleys packed with team members, Sounders FC employees and local officials.
Seattle police also said they arrested two people who tried  to board the Sounders’ trolleys.