The term fundamentalism is almost exclusively used in the context of religion.
The book "Islamic Fundamentalism" describes religious ideologies seen as
advocating a return to the fundamentals of Islam the Quran And the Sunnah.This
book also discusses that it is deemed problematic by those who suggest that
Islamic belief requires all Muslims to be fundamentalists and by others as a
term used by outsiders to describe perceived trends within Islam.Islamic
fundamentalists hold that the problems of the world stem from secular
influences.Further, the path to peace and justice lies in a return to the
original message of Islam combined with a scrupulous rejection of all Bid'ah
("religious innovation")