Factual error: The movie takes place in 1878. The Indians are all armed with Winchester repeating rifles. Indians of the period were more likely to be armed with old obsolete rifles (Civil War vintage) including some muzzle loaders with prehaps a sprinkling of Winchesters. Also, Indians were very proud of their rifles and usually decorated them with items such as brass tacks; no such decorations are to be seen.
Deborah Wright: Dull Knife, the old chief is much too sick. He'll never make such a trip. Listen.
Dull Knife: If he lives to ride even a mile closer to home, he will die as a man should. There will be no more dying in this place.
Little Wolf: You spoke the truth for us. This we will not forget - but there will be no more school.
Deborah Wright: Oh, no! Oh, no, please don't do that to the children.
Little Wolf: The white man's words are lies. It is better that our children not learn them.
Deborah Wright: It is not the words... but who speaks them. Has speaking white men's words made you a liar?
Dull Knife: Our words were learned long ago, when some white men still spoke the truth.