The earliest history of Ahmadi Muslims in the archipelago dates back to the summer of 1925, when roughly two decades before the Indonesian revolution, a missionary of the Community, Rahmat Ali, stepped in Sumatra and established the movement with 13 devotees in Tapaktuan, Aceh. The community has had an influential history in Indonesia's religious development, yet in modern times it has faced increasing intolerance from religious establishments and physical hostilities from radical Muslim groups. In Ahmadiyya organisation "Jamaah Muslim Ahmadiyah Indonesia" (JMAI), there are an estimated 400.000 followers, which equates to 0.2% of the total Muslim population, spread over 542 branches across the country; in contrast to independent estimates, the Ministry of Religious Affairs (Indonesia) estimates around 80.000 members. A separatist group, Lahore Ahmadiyya Movement for the Propagation of Islam, known as "Gerakan Ahmadiyah-Lahore Indonesia" (GAI) in Indonesia, has existed in Java since 1924 and had only 708 members in the 1980s.