because of religious restrictions, saudi culture lacks any diversity of religious expression, buildings, annual festivals and public events. celebration of other (non-wahhabi) islamic holidays, such as the muhammad's birthday and the day of ashura, (an important holiday for the 10–25 percent of the population that is shīʿa muslim), are tolerated only when celebrated locally and on a small scale. shia also face systematic discrimination in employment, education, the justice system according to human rights watch. non-muslim festivals like christmas and easter are not tolerated at all, although there are nearly a million christians as well as hindus and buddhists among the foreign workers. no churches, temples or other non-muslim houses of worship are permitted in the country. proselytizing by non-muslims and conversion by muslims to another religion is illegal, and the distribution of "publications that have prejudice to any other religious belief other than islam" (such as bibles), was reportedly punishable by death. in legal compensation court cases ("diyya") non-muslim are awarded less than muslims. atheists are legally designated as terrorists. and at least one religious minority, the ahmadiyya muslims, had its adherents deported, as they are legally banned from entering the country.