This article studies the unfolding of a broad conservative bloc amidst the politico-cultural battles that took place in Cold War Argentina. Focusing on the unexplored gendered, sexual and generational dimensions of the figure of the ‘enemy within’, the article shows that this figure was at the core of a project which coincided with authoritarian practices emanating from the state and also from segments of civil society. The creation of that figure had significant effects, not only in the political but also in the educational and cultural realms, including the imposition of censorship and the delineation of restrictive sexual policies. Moreover, it conditioned the ways in which political repression developed in the context of 1970s state terrorism.