Good golly - they would kill their children so they could fight? Definitely Utopian./ not.
I visited a town in Kansas when I doing genealogical research. The local museum was very interesting. The RR had gone through there, lots of bad guys killed in the OK Corral, I suspect. There was an Indian section with a sign that said, “Do not ever think the Indians were anything but savages. They skinned people alive….’ with a lot of elaboration on exactly what the settlers there had had to deal with. It was a very strong, NOT PC statement. There were lots of photographs, too.
Where was that? I would be interested in seeing if they have a website.
People know about scalping, but they don’t know that many Indians collected huge piles of body parts, like arms, and kept them in their homes, on display.
Examining a camp after a battle, might reveal guys with things like for example, a dozen right hands, cut off of infants, both white and Indian.
People don’t know that a teenage white captive, who survived the rape and torture on the journey home to the village, might be made the camp whore by her owner, a public sex tool, something which meant she might be raped 6 or 8 times every time she had to go for water or wood.
The Indians were different, being a serial killer torturer was a good thing, to them.