Who has the authority to define what constitutes antisemitism, and what are the consequences of such definitions? With this question, our director Marietta Auer engages in a contribution to the Zeitschrift Merkur. In her legal column, she analyzes the current political and legal debate surrounding the concept of antisemitism, particularly in the context of the resolution passed by the German Bundestag on November 7, 2024. Auer highlights that defining antisemitism is not merely a matter of terminology but has profound implications for public discourse, freedom of speech, and political practice.