Algeria
Islam is the predominant religion in Algeria, with its adherents, mostly Sunnis, accounting for 99% of the population according to a 2012 CIA World Factbook estimate, and 97.9% according to Pew Research in 2010. There are about 150,000 Ibadis in the M'zab Valley in the region of Ghardaia.
Christianity in Algeria
Since Independence, there has been a rise of Islamic fundamentalism. The 1996 murder of Pierre Claverie, bishop of Oran was an act of violence by Islamic extremist terrorists against the Christian community.Translated from : Introduction and Christianisme en Algérie sectionsVöcking, Hans. "Algeria." In "The Encyclopedia of Christianity", edited by Erwin Fahlbusch and Geoffrey William Bromiley, 39-40. Vol. 1. Grand Rapids: Wm. B. Eerdmans, 1999.