On the eve of the outbreak of the Second World War, American Catholicism had already mobilized for an ideological confrontation. This struggle did not take place on the battlefield; rather, it unfolded within the pages of the books consumed by an increasingly consumer-oriented society during its leisure time. Among these forms of popular reading, comic books -marketed primarily to young audiences - emerged as the central target of what would become a genuine ideological crusade for Catholicism during the 1940s and 1950s. Through the National Office of Decent Literature comics were systematically monitored and censured due to their status as a literary medium with unprecedented mass reach among young readers, their capacity to intensify narratives through the combination of text and image, and their tendency to address fantastical or non-canonical themes. These qualities were perceived as opening the door to the exploration of topics considered either uncommon or morally objectionable at the time. Consequently, comics were interpreted as a medium capable of disseminating attitudes deemed dangerous to the religious and moral well-being of their readers. In particular, depictions of sexuality became a focal point of censorship. A concerted campaign of discreditation and persecution of this literary form was launched with the dual objective of preventing the circulation of certain messages among young people and of promoting reading materials that, through affirmation or omission, reinforced narratives of morality and gender aligned with the Catholic principles of the period.