Red the Half Breed (1970)

A half-cast used cars salesman wants anything from the white society and is ready to do anything to get it. But when he is accused of murdering his half-sister who was killed with his rifle, he flees to an indian village. He doesn't feel any more at home there than in the white city. He decides to go back to find and punish the killer.

Unfortunately the movie Red the Half Breed is not yet available on HBO Max.