Two types of public spheres have been distinguished: the broad one which includes everything that takes place in public spaces, and the narrow one which covers activities of political importance. The article discusses morality of the public sphere in the narrow sense. Public morality is there to protect individuals and the whole society against the evil of others and contributes to the material and spiritual development of communities. Values and goods of particular importance for the existence and development of society are protected by statutory law. Standards of good law should be consistent with moral norms, and therefore must protect life, health, property, freedom, prosperity, justice and order. The rules of social decency are protected by extra-legal morality, present in the form of habits, customs, culture, social opinion. We live in an age of transformation of public morality (and private, i.e. present at home and in the family). Moral liberalization in this area entails the demoralization of the public sphere as a whole.