Though Algeria's constitution guarantees freedom of worship, it also declares Islam the state religion and prohibits activities incompatible with Islamic morals, and in reality religious liberty for non-Muslims is limited by a number of laws and practices. Registering non-Muslim groups is difficult, proselytizing is punishable by up to three years in jail, and Christian groups often have trouble obtaining visas, although this last problem has apparently eased in recent years. The Protestant Church of Algeria has been particularly targeted, with eighteen of their churches shut down between November, 2017 and October, 2019. This casts doubt on the state of religious freedom in Algeria. In general, non-Muslims are socially tolerated, but some discrimination and abuse exists, and many Christians keep a low profile.