Salafism is a branch of Sunni Islam whose modern-day adherents claim to emulate “the pious predecessors” (al-salaf al-ṣāliḥ; often equated with the first three generations of Muslims) as closely and in as many spheres of life as possible. Different scholars of Islam throughout time have striven to emulate the early Muslim generations in the legal sphere, in theological matters, or in both. The ideas espoused by these scholars have more or less culminated in the Wahhabi movement that started on the Arabian Peninsula in the 18th century, which in turn helped spread a Salafi message to the rest of the Arab and Muslim worlds and even beyond. As such, the trend now referred to as Salafism came about, expressing itself ideologically in teachings that are meant to present the trend as exclusively and meticulously adhering to the example of the salaf, while rejecting all other sources of influence. Practically, Salafism can be divided into three branches: quietist Salafism, whose adherents shun political activism and concentrate on “cleansing” and teaching Islam in all its “purity”; political Salafism, which does concentrate on political commitment as an integral part of Islam through contentious debates, parliamentary participation, and founding political parties; and Jihadi-Salafism, whose followers seek to overthrow supposedly apostate regimes in the Muslim world through violent jihad. Although the term “Salafism” is heavily contested among Salafis—with adherents of one branch often not allowing the application of the label to be applied to the other branches—its various ideas and manifestations show that Salafism is quite a diverse phenomenon.