People always talk about the oppression as ancient history, but it has been perpetual for many groups, not just limited to indigenous. Allotment ran until 1934, giving away native lands. After that they moved to Termination, where they tried to dissolve reservations and negate treaties.
I’m sure many families in the west did. I don’t know the heritage on my mothers side, but she is white, and goes back at least to the 1800s in the US, so I can’t imagine I haven’t in someway benefitted from allotment or other genocidal policy of the US Gov. I don’t think any living individual is responsible for anything they didn’t directly contribute to, don’t get me wrong, but I think its important to recognize the immense privilege certain classes of people have had historically, and the immense lack of privilege other classes had, and how those privileges translate into systematic injustices in the present day that we should work to correct.