In July 1895, a posse of non-Indians, mostly outfitters, attacked a peaceful band of Bannocks south of Jackson Hole. The Indians believed they were legally hunting elk their Idaho reservation, but the U.S. Supreme Court ruled that state law overrode their treaty rights, a huge blow to tribal sovereignty. In 2019, the court finally upended that ruling, in a case involving a Crow Tribe member, also hunting in Wyoming and off his reservation.