Research on familialism in Europe usually focuses on family policies, pointing out how female reproductive and work rights are often contrasted with the interest of the family, as shown by the individualism vs. familism understanding of familism (familialism). Here, however, I focus on another understanding of familism that sees the family as the model for other social institutions. This novel angle on the European context enables research on a scarcely researched aspect: how familism is used to render non‐heterosexual rights illegitimate. Turning to Ernesto Laclau and Chantal Mouffe’s rhetorical understanding of politics, I show how the rhetorical use of the family legitimizes anti‐LGBTQ+ sentiments. I focus on the Hungarian “Child Protective Law,” passed by the illiberal Fidesz‐KDNP government in 2021. The content analysis of the material shows how the Hungarian government’s aspiration to protect children, both as crucial members of heterosexual nuclear families as well as symbols of the illiberalist future of the country, legitimizes anti‐LGBTQ+ stances. This happens, first, through a discursive link between LGBTQ+ people and child abuse. Second, it occurs through the government´s familistic ideal of the Christian heterosexual family, which also constitutes its antagonistic frontier as the LGBTQ+ community. I argue for a new articulation of the illiberal “us” and its liberal frontier, where the ideal family, and in particular heterosexuality, function as a means of exclusion. This article contributes to existing literature on gender and illiberalism as well as to current discussions on the limits of the theoretical concepts of familism.