In North America, Indian rites and traditions such as sweat lodges, sun dances and vision quests are now basic to courses offered in self-exploration. Artefacts associated with Indian culture are widely sold. Some American Indians consider that the exploitation of their sacred rituals by non-Indians, hucksters, cultists, commercial profiteers and New Age shamans is a form of cultural robbery. As such it constitutes a final phase in the process of ethnocide whereby the whites first took their land.