Your first statement is highly misleading, the residential schools started in the 1800s and peaked in 1931. They were also primarily run by religious organizations. The abuse and human experimentation on the childern also predate Trudeau by decades. Yes the federal government had a role in oversight, but to pin the residential schools so completely on Pierre Trudeau is downright disingenuous and masks the complicity of many many other people.
But it was indeed a dark chapter in the history of Canada. For those of you curious about the residential schools a basic introduction can be found at: https://www.thecanadianencyclopedia.ca/en/article/residentia...