The Poverty of Liberalism by Robert Paul Wolfe

He is one of the first to make the argument back in the 50s that American liberalism’s blithe assumption that all religions can get along works with religions that are tolerant, tame, and business friendly. But what about a religion that regarded the presence of an opposing faiths as an anathema? How does it work then? For this we have no ready answer, no answer that lives within the liberal tradition. Liberal democracy is a set of rules and procedures that works only if it have a 'liberal' population to work on.