Originally Posted by Paul Barnard

I don't know how the law plays out on your side of the border. An officer has a right to talk to anyone, to ask anyone a question, to ask anyone to identify themselves, to direct anyone to comply with the law and their lawful orders, and to use the force necessary (as outlined in their use of force policy) to compel compliance.

I missed the part of the video where the cop threw the subject to the ground. Do you have a link to that one? Any facts that you can provide as to what went down prior to the video posted in the OP are of great interest to me. I only watched the original video and read the accompanying write up.