I assume you saw the excellent Kit Carson documentary PBS did several months ago. It covered his entire life, and did a great job of it. It seems that the Indians went through several phases in the attitudes of palefaces.
First they were 'noble savages', as Columbus first described them, like big dumb children who never heard of God or Jesus and perhaps were innocent of the Original Sin. Then Columbus and his men made contact with the Caribes, who were kidnappers and cannibals, and Indians were seen as diabolic at worst and pests to be tamed and enslaved at best.
The same seemed to happen in New England: the Indians befriended the Plymouth and Jamestown Colonies, and taught them how to grow corn and other crops and how to survive. Later the colonists wanted more land, and the Indians became pests. Indians cooperated with the expansion of White settlements by dying of all sorts of epidemic diseases brought by the Europeans.
By the time Carson came around, there were good Indians and bad Indians. The Pawnee and Kickapoo were good, because they served as scouts and stayed out of their way. The Cherokees, Choctaws, Creeks and the other 'civilized tribes' were seen as good, because they settled down and became farmers, but bad to some, including Andrew Jacksn, because they chose to do this on Georgia, Carolina, Alabama and Mississippi farmland,which was coveted by settlers and the government, who wanted to sell it to them.
Carson had several Indian wives, and then married into a Spanish family in New Mexico. He was friendly with the Spanish and the Utes, who were enemies of the Navajo, some of whom were raiding Spanish towns, so he got involved in the destruction of the Navajo villages in Canyon de Chelly, which he later regretted, as th Navajos suffered greatly at their new reservation at Bosque Redondo.
In Carson's time, Indians were seen as members of different tribes, not as a single minority as we see them today: some were seen as better than others, since some were not a nuisance to White expansion. The Pueblo Indians, for example, stayed in one place and caused few problems. They were also not sitting on any gold or silver deposits, which was a big advantage for them.
Indians still see a distinction between various tribes.