This paper analyses the implications of the recent convergence between politics and religion in Latin America. To address this subject, I highlight the complex interaction of 1) the process of secularisation (involving both secularism and secularity) in the region; 2) the trend towards pluralisation of the religious field; 3) the concurrence of counter-secular expressions in the public space; 4) and the occurrence of conflict in the political arena. Secularisation in Latin America historically emerged as a process of distinction of the political sphere. However, it is currently expressed as a democratic ideal through the dispersal in society of certain secular notions favouring state autonomy; especially in those countries that maintain the secularism legally established in the nineteenth century. Particularly, I explore the historical boundaries between religion and the state in Mexico, and the current status of this differentiation. Building on this discussion, I also advance the analytical notion of sacred secularism—as a principle and expectation in the public space—identified by its untouchable character; its link to the blood spilled in the nation’s past; a prophecy of crisis and the future end of the secular state; and the condemnation of the profane forces who disturb the established separation between religion and politics.