From the Canadian Civil Liberties Association
"You do not have to be a victim of police misconduct to file a complaint. The complaint can be about something that you saw happen to someone else or about a policy of the police more generally. You also do not need officers’ names or badge numbers. You do not have to meet with the officer who is the subject of the complaint if it would be traumatic or abusive for you. There is also no fee or cost involved."
The more complaints the better I say.