Canada: A "filmmaker" claims that one of the police officers had a rock in their hand, why would I believe a "documentary filmmaker" without any actual evidence (you'd expect a video evidence from the guy) participating in a protest more than actual police officers? or than the minister of public safety? or than the journalist who obviously could not verify it and as such did no mention it?
There's only one logical reason that comes to my mind: because you want to, like the person who choose the title "Canadian Undercover Police Officers Caught Trying to Start a Riot", that's not an honest title, "Canadian Filmmaker Pretends Police Officers Tried to Start a Riot" would have been actually honest. Who's manipulating who now?
Nice description under the video too, but it's only one side of the story: we also hold tons of evidence that people actually lie and plan to lie just to cause agitation, protests and so on. Is that something that you would be interested in as well? Or are you just interested in "anything against the elected government"?