Through a hypothetical deductive study, based on premises of the hermeneutical analysis for the reading of reality, this article seeks to reflect on religious diversity in the context of contemporary Brazilian constitutionalism, taking into account aspects related to the influence of the Catholic religion in state affairs. It proposes, by extension, a reflection on how followers of different religions have lived through the complex web of relationships in which belonging to a certain religious tradition can lead to mistrust, contempt, prejudice and discrimination. This approach shows that, in Brazil, despite the continuous enunciation of religious freedom in its different constitutions, in general, the use of discrimination and control mechanisms has always been persistent, such as the use of criminal laws through religious arguments cultural and moral. By establishing principles, constitutionalism evokes tradition, history, and doctrines. What is imposed in this perspective, therefore, is the challenge in favor of a dialogical praxis as an indispensable condition for the strengthening of democracy based on consolidated tolerance as a prerogative aligned with human rights.