And in some ways, I think they were still in the right in that belief more than the European colonists, simply because they were in fact there first. No moral judgement, simply based on the most neutral fact possible they "owned" the land first.

But if you try to fuck around, you can't be upset when you find out. Even worse, when you drag down a much larger amount of people who didn't want to fuck around with you, you are committing outright acts of evil that you can't blame on anyone else.