Little additional note on the OP here;
The Indians slaughtered innocents, women and children alike, but only after they had been taught this type of warfare from the invading Europeans, especially the Spanish, who often killed Indians just for fun, raped and killed their women, worked their men to death, killed their children for something as minute as just wanting to ‘test the edge of their swords’ and generally treating them worse than the majority of slaves in the American South were treated.
To the American South, slaves were a valuable commodity and most were treated like valuable animals but the Spanish treated them as useless objects, to be used and discarded. (Funny how everyone screams about the American mode of Inhumane Slavery, but not one peep is mentioned about the type of brutality the Spanish used on natives that would make the WW2 holocaust almost pale in comparison.) ((Maybe because said slaves were not African and Black??))
Again, in the arguments you all have been expounding on, you keep forgetting about the maturity levels of the time. You cannot compare those people with anyone today and expect to develop a rational explanation. Were you to encounter any of the great American historical figures of the time and engage them in lengthy conversation, you would probably be stunned at how they actually thought of things and their reasons for doing them. The History books were written by educated historians many years later, most of whom, as we well know now, adjusted the telling according to how they personally felt about things.
You can get a mindset of the times by reading any good collection of personal letters or diaries people of the times left behind. (These people bathed once a month*, used perfumes and powder to cover up their stink, had the brilliant idea of running open sewers down the middle of public streets, thought nothing of dumping full chamber pots out of second story windows, and wore, what we would consider, heavy clothing that was not washed nor changed every day. They had a lot of time on their hands if they were rich, more than enough time to think up ways to get into trouble because there was no TV nor radio and often not much in the way of news. Their world view was generally limited and the average person never got more than 20 miles away from his village.
They use sour milk to whiten sheets! Can you imagine how they smelled even after being hung outside to dry for a few days? The insides of those glorious mansions must have reeked quite frequently, especially during parties.
In a certain time period, birth was thought to be something like budding from a tree or plant even though they saw live births from people and animals!! (There are paintings depicting this strange process.)
I saw a period painting once, in a museum, on TV, done by a good artist, of what looked like a couple of teens dressed up in flouncey, bouncy period clothing. It turned out to be a painting of a rich Lord and his wife in their mansion! You could tell by looking at them that they were spoiled and not generally mature, yet they commanded a lot of power in their community.
Like I said, you need to consider the maturity of the people of the times who did not have the vast amount of information available to them daily like we have today.