How does the past remain present in the urban landscape—in houses, streets, and public squares—even after the culture that once sustained it has been destroyed? What happens when history is not merely an abstract memory but a material reality that continues to shape and unsettle the present? In Bloody Wednesday , Yechiel Weizman traces the ghostly presence of the Jews of Olkusz, a town in south-central Poland whose large Jewish community flourished for centuries, until the Holocaust. Despite their total physical absence, from the end of the war until today the memory of the Jews is palpable and persistent—and at the same time silenced and repressed—in every street corner: in empty houses, in abandoned cemeteries and synagogues, in plaques and monuments, and through the ongoing public debates about property, heritage, and commemoration. Using the case study of a single Polish town, the book shows how the urban topography of Eastern Europe was continuously reshaped and redefined in relation to the legacy of the Second World War, the question of Jewish property, and the politics of Holocaust memory during the Communist period and after the fall of the Iron Curtain. Adopting a microhistorical lens and examining the smallest details of everyday life and urban history, the book reveals how the persistent debate over the presence of the dead Jews in the concrete and imagined spaces of one small town became a dramatic arena for a painful, intimate, and nostalgic confrontation with the violent fingerprints of the twentieth century and with pressing questions of responsibility, ethics, and guilt.