I was unequivocally taught that it happened, white colonists were responsible, and that it was genocide. It came up a few times over the years in age-appropriate lessons (they don't go into detail when teaching third graders ofc) and every time the narrative was about the same.

HOWEVER our classes never dwelled on it much. It was taught with as much gravitas as any other random lesson, i.e. I was bombarded with a litany of names and dates to memorize for a standardized test which I promptly forgot in order to prepare for the next one, and the next one, and the next one...

My classes didn't distinguish between the indigenous peoples and I never learned about the native tribes that belong to my area. My teachers taught only what colonizers did to them, not who they were and are. And crucially, I was taught that this was all history and not that it is an ongoing genocide. And that the colonizers of the past are, somehow, disconnected from our government of the present.

Also we never made a connection between the Nazis and the colonists, or talked about class and capitalism at all, really.