The post was a meme in the meme community. OP is saying "huurrr Canadians so polite". That's not a new trope.
I'm pretty sure the riots in Ottawa that needed to be broken up by the military, is still pretty fresh in everyone's mind, since it happened a few years ago during COVID. And yes, there's controversy about how much of a "riot" it actually was, and whether the force used was excessive or an over reach; but none of that is the point.