ABSTRACT This paper focuses on the memory activism of three survivors of the Auschwitz resistance and explores the ways in which they linked fascism and genocide to economic exploitation. By doing so, our paper excavates a leftist-antifascist paradigm of postwar memory that waned with the advent of contemporary Holocaust culture. We analyse the memoirs of Oszkár Betlen, Bruno Baum, and Hermann Langbein, members of the international communist movement before, during, and after the Second World War. For these authors, calls to remember Auschwitz were inseparable from a struggle for social change in the present, and their memory practice was never restricted to writing. Therefore, our paper places their memoirs into the wider context of their political-organizational work, and shows that their efforts to commemorate Auschwitz responded to some pressing issues of their time, including the re-militarization and NATO-membership of the Federal Republic, reparations, amnesty and reintegration of former Nazis, and war crimes trials. Importantly, all these issues were intertwined with what they regarded as capitalist restoration and a looming resurgence of fascism. Our paper argues that the so-called economic case was central to their postwar campaigning because they believed that economic exploitation was central to fascism and had wide-ranging implications for postwar societies as well. Furthermore, we challenge the prevailing view on antifascism by demonstrating that for these authors the economic aspect of fascism did not eclipse the genocidal character of fascism and the specifically Jewish experience of it. In contrast to some Marxist historians, they did not see genocidal policies as merely derivative or secondary either. Rather, these leftist-antifascists commemorated Auschwitz in ways which regarded economic exploitation and genocide as interrelated and constitutive aspects of fascism.