I mean, Trudeau's father called in the military because a terrorist group kidnapped a government minister and set off multiple bombs. This is pretty small potatoes compared to the FLQ.
We don't have the concept of co-equal branches of government, but the judiciary can declare acts of parliament to violate the charter of rights and freedoms. The Emergencies Act explicitly says it does not supercede any constitutional rights.
There was concern of over-reach when Pierre invoke the War Measures Act also. The War Measures Act included all of Canada, not just the geography the FLQ was operating in. I was fairly young at the time but I still have a recollection of the bombing, kidnapping and murder. I can't reconcile the current protest demands with say the FLQ manifesto[0]
