Muslim fundamentalists

Islamic fundamentalism has been defined variously as a movement of Muslims who harken back to earlier times and seek to return to the fundamentals of the religion and live similarly to how the prophet Muhammad and his companions lived. Islamic fundamentalists favor "a literal and originalist interpretation" of the primary sources of Islam (the Quran and Sunnah), and seek to eliminate (what they perceive to be) "corrupting" non-Islamic influences from every part of their lives, and see "Islamic fundamentalism" as a pejorative term used by outsiders for Islamic revivalism and Islamic activism.

Definitions vary of what Islamic fundamentalism is and how, if at all, it differs from Islamism (or political Islam) or Islamic revivalism. The term has been deemed "misleading" by those who suggest all mainstream Muslims believe in the literal divine origin and perfection of the Quran and so are "fundamentalists", and by others as a term used by outsiders to describe perceived trends within Islam. Exemplary figures of Islamic fundamentalism are Sayyid Qutb, Abul Ala Mawdudi, and Israr Ahmed. The Wahhabi movement and its funding by Saudi Arabia is often described as being responsible for the popularity of contemporary Islamic fundamentalism.

…didn't hesitate to attend Hindu ceremonies. Khomeini never proposed the status of dhimmi (protected) for Iranian Christians or Jews, as provided for in the sharia: the Armenians in Iran have remained Iranian citizens, are required to perform military service and to pay the same taxes as Muslims, and have the right to vote (with separate electoral colleges). Similarly, the Afghan Jamaat, in its statutes, has declared it legal in the eyes of Islam to employ non-Muslims as experts.

Distinctions between Fundamentalism and Islamism (or at least pre-1990 Islamism) according to Roy are in the fields of:

Islamic fundamentalism (at least among Sunni Muslims) traditionally tends to fall into "traditionalist" and "reformist" tendencies:

...
Wikipedia