Seattle police said firefighters took the man who was shot to the hospital and that he was in stable condition. No one else was injured, the police said.
The suspect was seen in the video exiting his car as protesters began to surround it. He brandished what appeared to be a gun, dashed through the crowd and turned himself over to police.
The incident was in contrast to the mostly peaceful weekend protests sparked by the death of George Floyd last month while in Minneapolis police custody.