When the traces of those past wrong are still with you every day - when you still live on reservations, under the authority of a government where the overwhelming bulk of power is vested in the people who wronged you, the idea of "not dwelling on the past wrongs" is a delusional fantasy.
Wat should be done is to make sure that people now are not unfairly discriminated against,. that they have the same legal protections and all the basics necessary for a decent life. That power is not monopolized by some groups against others.
The later is all but impossible without identifying who those "others" are and why power is monpolized against them by others,, and then people like you start screaming about "identity politics!".
Power IS monopolized by men in a way that is harmful to women. By white folks in a way that is harmful to other races. By descendants of immigrants and colonists at the expanse of Natives. These are simple, factual observations - political figures, are overwhelmingly white, men, christians, straights ; and their policy have a strong tendency to limit or harm the rights of women. There are a thousand different ways power is monopolized, a lot of it is the direct result of historical events, and of the damage done in the past that has yet to be fixed, but that still permeates society as a whole. Each of those break line between the powerful and the weak is unique, the result of its own distinct factor, and if we're to fix them we need to address the specific circumstances that allow it to exist.
Your approach is saying everyone with a migraine should get a tylenol (which beat the right-wing approach of "just though it out you weaklings!", mind). Mine is actually figuring out what past event is behind those migraines, and how to treat them accordingly.