Islam
Islam, the religion of almost all of the Algerian people, pervades most aspects of life. It provides the society with its central social and cultural identity and gives most individuals their basic ethical
Since the Algerian War, also called the Algerian Revolution, regimes have sought to develop an Islamic Arab socialist state, and a cabinet-level ministry acts for the government in religious affairs. Although the Boumediene regime consistently sought, to a far greater extent than its predecessor, to increase Islamic awareness and to reduce Western influence, the rights of non-Muslims continued to be respected. The Bendjedid government pursued a similar policy.
Early history
During the seventh century, Muslim conquerors reached North Africa, and by the beginning of the eighth century the Berbers had been for the most part converted to Islam. Sunni Islam, the larger of the two great branches of the faith, is the form practiced by the overwhelming majority of Muslims in Algeria, while there is a small Ibadi minority. There is no significant Shia presence.
Before the Arab incursions, most of the Berber inhabitants of the area's mountainous interior were pagan. Some had adopted Judaism, and in the coastal plains many had accepted Christianity under the Romans. A wave of Arab incursions into the Maghreb in the latter half of the seventh century and the early eighth century introduced Islam to parts of the area.
One of the dominant characteristics of Islam in North Africa was the cult of holy men, or maraboutism. Marabouts were believed to have barakah, or divine grace, as reflected in their ability to perform miracles. Recognized as just and spiritual men, marabouts often had extensive followings, locally and regionally. Muslims believed that baraka could be inherited, or that a marabout could confer it on a follower.
The turuq, meaning way or path, or brotherhoods, were another feature of Islam in the Maghreb from the Middle Ages onward. Each brotherhood had its own prescribed path to salvation, its own rituals, signs, symbols, and mysteries. The brotherhoods were prevalent in the rural and mountainous areas of Algeria and other parts of North Africa. Their leaders were often marabouts or shaykhs. The more orthodox Sunni Muslims dominated the urban centers, where traditionally trained men of religion, the ulema, conducted the religious and legal affairs of the Muslim community.
Islam and the Algerian state
Jews and Christians, whose religions he recognized as the precursors of Islam and who were called "people of the book" because of their holy scriptures, were permitted to continue their own communal and religious life as long as they recognized the temporal domain of Muslim authorities, paid their taxes, and did not proselytize or otherwise interfere with the practice of Islam.
Soon after arriving in Algeria, the French colonial regime set about undermining traditional Muslim Algerian culture. According to Islam, however, a Muslim society permanently subject to non-Muslim rulers is unacceptable. Muslims believe that non-Muslim rule must be ended as quickly as possible and Muslim rulers restored to power. For this reason, Islam was a strong element of the resistance movement to the French.
Religious minorities
Christianity came to North Africa in the Roman era. Its influence declined during the chaotic period of the Vandal invasions but was strengthened in the succeeding Byzantine period, only to disappear gradually after the Arab invasions of the seventh century. There is also a small growing pentecostal and evangelical community.
The Roman Catholic Church was reintroduced after the French conquest, when the Diocese of Algiers was established in 1838. Proselytization of the Muslim population was at first strictly prohibited; later the prohibition was less vigorously enforced, but few conversions took place.
The several Roman Catholic missions established in Algeria were concerned with charitable and relief work; the establishment of schools, workshops, and infirmaries; and the training of staff for the new establishments. Some of the missionaries of these organizations remained in the country after independence, working among the poorer segments of the population. In the early 1980s, the Roman Catholic population numbered about 45,000, most of whom were foreigners or Algerians who had married French or Italians.
In addition, there was a Protestant community. Because the government adopted a policy of not inquiring about religious affiliation in censuses or surveys to avoid provoking religious tensions, the number of Christians in the early 1990s was not known.

