Public order and freedom of religion have special links since the foundations of the modern State. The debate on the nature and content of the notion of public order has grown in importance with regard to religious practices. The discussions on facial concealment have led in particular to determine whether, beyond respect for public order in the traditional sense of order in the State, religions can be required to respect the morals of a secularized society. Divergent responses were given, sanctioned by a constitutional solution that seems to open up the possibility of adopting a moral order to limit the expression of religious beliefs.