“How did Canada ban guns? Did Prime Minister Trudeau just say so himself?”
That is EXACTLY what Trudeau has done, by executive order, Parliament be damned. Issued a list of banned weapons he drew up himself.
And make no mistake, the RCMP will shoot to kill any miscreants who dare disobey. Freedom-loving Canadians are a targeted class who will be betrayed by their fellow subjects; watch for snitch hotlines and websites where no names need be given.
When was the last time the RCMP shot anyone? Aren’t they just tour guides at national parks in Canada? :-P