What is the general attitude of white settlers towards indians on the frontier?

What is the general attitude of white settlers towards Indians on the frontier? How did Stands with a Fist come to live with the tribe? What tribe does Dances with indians, specifically the Sioux, John begins ... these "savages" and bring our allegiances to them instead of the white settlers and ... see from the Indians in general is not also justified in some way or another, but we ... to the American frontier, where he encounters a tribe of Sioux Indians.