The European Court of Justice (ECJ), the European Union's highest court, has ruled that a Hungarian law restricting LGBTQ content for minors breaches EU law on multiple grounds, in what has been described as the largest human rights case in the bloc's history. The ruling, delivered by all 27 ECJ judges sitting in full plenary session, found that Hungary violated EU law "on a number of separate levels" and that the legislation runs contrary to "the very identity of the Union as a common legal order in a society in which pluralism prevails."

The law in question, passed in 2021 under nationalist Prime Minister Viktor Orbán, was introduced under the banner of tougher penalties for child sexual abuse. It was subsequently amended to broadly ban the "promotion" of homosexuality and gender transition to those under 18, leading to the prohibition of books, films, and other audiovisual content featuring LGBTQ themes. Critics drew comparisons to Russia's 2013 gay propaganda law, arguing that by linking the legislation's title to paedophilia, it explicitly stigmatised gay and transgender people. The ECJ agreed, finding that the law treats non-heterosexual and transgender individuals "as a danger to society solely on the basis of their sexual identity," thereby violating the human dignity guaranteed under the EU Charter of Fundamental Rights. The court also rejected Hungary's argument that the legislation was an expression of national identity, ruling that EU treaties protect only conceptions of national identity compatible with the bloc's core values.

The case carries significance beyond Hungary. For the first time, the court declared a breach of Article 2 of the Treaty on European Union — which enshrines values including human dignity, equality, democracy, and the rule of law — as a standalone ground for an infringement ruling. Legal analysts note this expands the EU's tools for challenging member states that drift toward authoritarian governance, though the court specified that such proceedings require violations to be "manifest and serious."

The ruling arrives at a politically charged moment. The European Commission, which launched infringement proceedings against Hungary in 2022, was joined by 16 of the EU's 27 member states, including Germany. The Commission welcomed the decision as a "landmark" and said it is now for the Hungarian government to implement it. The judgment comes just days after Orbán's 16-year rule was ended by a defeat at the polls. His successor, Peter Magyar, has pledged to rebuild Hungary's relationship with the EU and is eager to unlock approximately €18 billion in EU funds frozen over concerns about democratic backsliding and corruption. Though Magyar is also conservative and avoided explicit positions on LGBTQ rights during campaigning, he declared in his victory speech that Hungary should be a country where "no one is stigmatised for loving differently." The ruling gives his incoming government both a legal obligation and a political opening to repeal or substantially revise the law without casting itself as a champion of LGBTQ causes — a balance Magyar has so far carefully sought to maintain.