Individual ‘rights’ usually get superceded in a national emergency or an extremist insurrection. One does have a right to protest and that includes a right to be removed and arrested.
Individual rights vs. the greatest good for the greatest number to maintain social control and social stability. Uh, no choice here. Majority good and individual rights always supercede extremist minority ‘rights’ and ‘freedoms’. Especially in civilized democratic countries like Canada.
Incidentally, if this was happening in Washington, the guns would have been quickly drawn. Life is more civilized and peaceful in Canada.