International audienceAfter the Cold War, a new constellation of actors entered transnational European assemblies. Their interpretation of European history, which was based on the equivalence of the two 'totalitarianisms', Stalinism and Nazism, directly challenged the prevailing Western European narrative constructed on the uniqueness of the Holocaust as the epitome of evil. This article focuses on the mobilizations of these memory entrepreneurs in the European Parliament in order to take into account the issue of agency in European memory politics. Drawing on a social and political analysis centered on institutionally embedded actors, a process-tracing analysis investigates the adoption of the furthest-reaching official expression of a 'to...