The native Americans, Australians, and New Zealanders seem to have had a worse deal than the Africans during the period of empire building. The whole sorry mess is a disgrace. But looking back and applying modern thinking isn't going to change history. Nor is trying to obliterate parts of that history which some people don't like.
More should be done to encourage people to look at a more rounded version of the whole issue of expansion and subjugation of endemic populations everywhere. Starting with Mesopotamia.................