Supporters of Justificatory Liberalism (JL)—such as John Rawls and Gerard Gaus—typically maintain that the state may not coerce its citizens on matters of constitutional essentials unless it can provide public justification that the coerced citizens would be irrational in rejecting. The state, in other words, may not coerce citizens whose rejection of the coercion is based on their reasonable comprehensive doctrines (i.e., worldviews). Proponents of the legal recognition of same-sex marriage (SSM) usually offer some version of JL as the most fundmental reason why laws that recognize marriage only if it is a union between one man and one woman are unjust. In this article I argue that the application of JL in support of legal recognition of SSM does not succeed because the issue under scrutiny—the nature of marriage—is deeply embedded in, and in most cases integral to, many (if not most) citizens’ reasonable comprehensive doctrines. Thus, I argue that because of the effects and consequences of the legal recognition of SSM, it results (or will result) in a violation of JL against dissenting citizens.