Salafi movement or Salafism - A reform branch of Sunni Islam referring to the salaf, the first three generations of Muslims, which rooted roots in the 18th-century Wahhabi movement in Saudi Arabia, and emerged in the late 19th century in Al-Azhar Mosque in Egypt to oppose Western European imperialism. Supporting the Shariah, they reject innovations (bid'ah) and may be classified between quietists (avoiding politics), activists invested in political matters, and jihadists advocating armed struggle.