The same dichotomy between sorcery and witchcraft exists (sometimes more ambiguously) in the beliefs of many peoples throughout the world. Again, witches are typically seen as particularly active after dusk, when law-abiding mortals are asleep. According to traditional Navajo belief, when a witch travels at night, he wears the skin of a dead animal in order to effect a transformation into that animal. These “skinwalkers” hold nighttime meetings at which they wear nothing except a mask, sit among baskets of corpses, and have intercourse with dead women. In some African cultures witches are believed to assemble in cannibal covens, often at graveyards or around a fire, to feast on the blood that they, like vampires, extract from their victims. If they take the soul from a victim’s body and keep it in their possession, the victim will die. Like those in Western society suspected of child abuse and Satanism, African witches in the popular imagination are believed to practice incest and other perversions.