Chief Red Cloud is obviously a racist.
Lakota theology in general has everyone getting along in the end. They have moral arguments (IMO) for the terms of the 1868 treaty, but the legalism gives the advantage to the USA. I have long thought that the settler portions that were passed after the last hostilities were the weakest portions of the US’s case and apparently so does the government since the USDA has a program that reverses the land claim issue with low interest loans for Indians to reclaim reservation land. My advice to the Indians, move on after securing property rights.