The widespread adoption of the IHRA definition of anti-semitism and the internalisation of its norms has set in motion a simplistic definitional logic for dealing with social problems that has impoverished discussions of racism and prejudice more generally, across Britain and beyond. It has encouraged a focus on words over substance.Erasing Palestine tells the story of how this has happened, with a focus on internal politics within Britain over the course of the past several years. In order to do so, it tells a much longer story, about the history of antisemitism since the beginning of the twentieth century. This is also a story about Palestine, a chronicle of the erasure of the violence against the Palestinian people, and a story about free speech, and why it matters to Palestinian freedom.