In August 1978, in the remote Patagonian highlands of Argentina, a Mapuche community led by a spiritual figure named Lonco Juan “Lonco”, meaning chief or leader in the Mapuche language, carried out a ritual that turned into a deadly episode. Believing several members of their group were possessed by evil spirits, they killed a woman and three children in what they believed was a collective exorcism. Argentine authorities ultimately declared the accused not criminally responsible due to a state of mystical trance and cultural alienation…