The Comanche wiped out for or five tribes of "native Americans." The Comanche were the finest light cavalry that ever existed. The defeated the Spanish, and the Mexican repeatedly, and they would have driven out the Texans, had it not been for Jack Hays getting hold of a half dozen of Sam Colt's new revolving pistols.
Quanah Parker, was the son of a white mother kidnapped as a girl by the Indians. The Searchers is a fairly accurate depiction. They weren't that nice.
The Comanche "took hair" to deny their enemies access to the after life. If they really hated you though, they left you your hair and cut off your dick which ensured you would spend entertain as a eunuch.