Honestly everything the Nazi’s did, the Commonwealth of the United Kingdom did first the Nazis just scaled it up big time. Modern concentration camps, British. The idea of The Final Solution, Canadian. Forced sterilization and eugenics, born in Europe but expanded upon by the United States. At least Canada is trying to find justice for the victims of it’s past. Even if it’s obviously failing. Is Canada genocidal now, no. We’re they, absolutely. Are they do enough to reconcile, not even close.
I am only going to be expanding on your discussion of the N-word specifically, and not the larger discussion. While the N-word is abominable in English, because the word for black in a lot of languages came from the Latin word “nigreos”, a lot of languages have words that sound like the N-word but are not. The word just means the color black. That’s just the etymology of the Latin word. If you have personal experience living in those areas then I’ll definitely add more weight to your comment, because I haven’t.