Kiffar
Kiffar is a term used in some Islamic contexts, primarily by certain extremist groups, to refer to non-believers. The word is derived from the Arabic word "kafir," which generally means one who conceals or denies the truth, and is often translated as "infidel" or "unbeliever" in English. Within mainstream Islamic theology, the term "kafir" can describe individuals who reject the core tenets of Islam. However, the usage and interpretation of "kiffar" by extremist factions often carry a more aggressive and condemnatory connotation, sometimes extending to Muslims who do not adhere to their specific, narrow interpretation of the faith.
The application of the term "kiffar" by these groups can be a justification for violence and persecution