 From their essentially political position, they developed extreme doctrines that set them apart from both mainstream Sunni and Shiʿa Muslims.The Kharijites were particularly noted for their readiness to takfir self-professed Muslims.Although Islamism is a movement devoted to the preeminence of Islam in all fields some have suggested that belief has been neglected in favor of politics, and that "organizers, enthusiasts, and politicians," rather than those focusing on spirituality or religion, have "had the most impact" in the movement.