Ever hear of the Indian reservation system? The US government rounded people up, took their land, and forced them into concentration camps. If they left the reservation, they were hunted by the US cavalry.
It is so rich to conquer a people and then show remorse while continuing to occupy the land.
https://en.m.wikipedia.org/wiki/Trail_of_Tears
How would you compare that part of American history to the Nazis? Or how about comparing that to the Japanese in WW2? Is the US really any better?
Given how the US is allies with Saudi Arabia, has conducted wars killing over a million people the last 30 years, do you actually think the US changed its ways?