The Lions Gate Bridge was shutdown, W. Georgia Street was shut down, vandalism - not a lot of happy campers out there.
I'd personally drag these anarchos and throw each of them into Lost Lagoon and give 'em a good drenching. Better yet, drive by 'em in an fire truck with a pressurized water hose and give them a good soaking.
Once they are cold and soaking wet, they will disperse quickly .