Looking back, it all seems so obvious. Women received the right to vote in 1918. Later, Diefenbaker's Minister of Immigration, the first woman in parliament, abolished racial requirements for citizenship in 1962. Pearson introduced the point system. Trudeau introduced bilingualism, multiculturalism and diversified the immigration stream in the late 1960s. Trudeau had the foresight to know some people would oppose his policies, so he introduced hate crime and hate speech laws in the 1970s to intimidate people into silence.
Trudeau repatriated the constitution in 1982. The Charter enacted along with it greatly expanded judicial power and gave unelected officials even greater opportunities to meddle in government affairs. The conditionality (not reasonable limits!) of rights and freedoms was affirmed by the Charter's notwithstanding clause.
The Charter paved the way for the Singh decision in 1985 which allowed every sick piece of shit under the sun to become de facto citizens of Canada, just as long as they could get here. Mulroney's Minister of Immigration, another female (see a pattern here?), introduced mass immigration in the the early 1990s. Immigration made the country worse, yet still continues, even though immigration fetishists cannot point to a single demonstrable benefit from having this neverending shitstream.
Canada has long had a culture of bullying and snitching, which is why top-down legislation occurred with almost no opposition. Rampant political correctness, including insane feminism and climate alarmism, gave bullies ample opportunities to control and manipulate others, especially people who disagreed with them. The end result was a population of submissive sheep who do whatever their masters tell them.
Trudeau Sr. was the architect of the modern Canadian police state. His successors merely built on top of the totalitarian framework he established. Also notice how all of these policies were imposed from the top down. None of these policies were grassroots. This is very typical of illiberal regimes, like Castro's Cuba. Now we have Covid hysteria and Covid tyranny. The totalitarian temptation was always there; they (Trudeau and his successors) were just slowly working up to it. Hindsight is naturally 50/50, but looking at all of these events, it doesn't take an Einstein to see the future of Canada was 1984.