I am sorry that you got downvoted. In 6th grade civics class (in California) we learned about the wide scale killing of the native populations. I live in Arizona, and we have a landmark nearby called Bloody Gulch where a US general who was supposed to march a tribe a few hundred miles to a new reservation, after about a few dozen miles decided it was simpler to just gun the whole large tribe, babies, children, and adults.

I am glad to be a US citizen, but for us to not acknowledge bad mistakes that we have made in the past (and including the recent past) is wrong, and diminishes our chances to do better morally and to improve our future chances of continued prosperity.