Mormonism has some really twisted sub cultures;
Under the Banner of Heaven: A Story of Violent Faith
From the author of Into the Wild and Into Thin Air, This extraordinary work of investigative journalism takes readers inside America’s isolated Mormon Fundamentalist communities, where some 40,000 people still practice polygamy. Defying both civil authorities and the Mormon establishment in Salt Lake City, the renegade leaders of these Taliban-like theocracies are zealots who answer only to God.