Canada's Ugly Secret

[Greyblades]

Well it is an attempt to extirpate the language(s), beliefs(s) and cultural practices of an entire racially defined group of people.
People were re-located on a massive scale to achieve these goals; and large numbers of people died as a result.
Even people who submitted were regularly starved and denied services.

I've highlighted the bits that I think are actually important.

The difference between the Nazis and the Canadian government was that unlike the Nazis, the Canadians believed the First Nations' inferiority was not inherent and could be taught out of them. Trying to destroy a culture is not as brutal as killing people on an industrial scale but the goals are similar. It is an attempt to extinguish a group of people.

Extinguish in that context means kill, which you just said the canadians werent trying to do.