Since the late 1980s sociologists have been drawing our attention to an international surge in the public visibility of religion. This has increasingly challenged two central aspects of modern western European culture: first, the assumption that as we became more modern we would become more secularised and religion would disappear; and secondly, that religion and politics should occupy radically differentiated spheres in which private conviction did not exert itself within the public realm. The new visibility of religion is not simply a matter of what Keppel famously called 'The Revenge of...