Not OP, but they are likely referring to the MMIWG crisis [0], which Justin Trudeau called a "genocide" in 2018.
[0]: https://en.wikipedia.org/wiki/National_Inquiry_into_Missing_...
[0]: https://en.wikipedia.org/wiki/National_Inquiry_into_Missing_...
I also worry that you are making the follow up error made by many and trying to use things that happened 50+ years ago now to justify current bad outcomes, when the current bad outcomes stem largely from the utter institutional failure that is indigenous services and the corrupt fiefdoms that are the reserves.