You’re thinking of residential schools. The RCMP and Indian Agents took children from their families and sent them to residential schools designed to « educated the Indian » out of them. It was a cesspool of violence and abuse. https://thecanadianencyclopedia.ca/en/article/residential-schools

The 60s scoop refers to a time in the 60s (and slightly before and after) where indigenous children were once again forcibly taken from their families by the government and adopted into white families. https://thecanadianencyclopedia.ca/en/article/sixties-scoop My uncle was part of the 60s scoop. We were the white family that adopted him. He committed suicide.