"Norenzayan distinguishes between private and communal religiosity in surveying support for suicide bombers among Palestinians.17 In a refutation of "Islam = terrorism" idiocy, people's personal religiosity (as assessed by how often they prayed) didn't predict support for terrorism. However, frequently attending services at a mosque did. The author then polled Indian Hindus, Russian Orthodox adherents, Israeli Jews, Indonesian Muslims, British Protestants, and Mexican Catholics as to whether they'd die for their religion and whether people of other religions caused the world's troubles. In all cases frequent attendance of religious services, but not frequent prayer, predicted those views. It's not religiosity that stokes intergroup hostility; it's being surrounded by coreligionists who affirm parochial identity, commitment, and shared loves and hatreds. This is hugely important."