On February 13, 2022, far leftist extremists staged a nasty kind of demonstration where they held captive a number of trucks on Riverside Drive and wouldn’t let them leave unless they removed all Canadian flags. They also seemed to walk them out of the kidnap area they created while heaping abuse on them as you can see from the video below. RAIR Foundation writes up some of the aspects of the tactics and organizations behind the counter-demo.
Below is one of the photos from the event, where you can see a revealing sticker on a car that was part of the demo, so most likely belonged to an organizer.
Also this flag demarcated the area the leftists took over:
No way I would have let them intimidate me into doing that. Never submit to bullies. It just encourages them.