"Bloody Sunday": Poland remembers the victims of the Ukrainian massacres in World War II

On July 11, 2026, Poland marked its national day of remembrance for victims of genocide committed during World War II by members of the Ukrainian Insurgent Army (UPA). The observance took place amid heightened sensitivity over historical tensions between Warsaw and Kyiv, with Polish President Karol Nawrocki laying a wreath at memorials dedicated to murdered civilians in the Radruz memorial complex in southeastern Poland. The date, known as "Bloody Sunday," marks the peak of violence on July 11, 1943, when approximately 100 villages were attacked, resulting in the deaths of thousands of Polish civilians. The commemoration comes as part of ongoing efforts to preserve historical memory and address unresolved issues stemming from wartime atrocities. According to reports from the Polish Press Agency (PAP), Nawrocki emphasized the importance of remembering the 120,000 Poles, mostly civilians and children, who were brutally killed by Ukrainian nationalists. He stated that keeping this history alive would contribute to reflection on shared future prospects. The president had previously stripped Ukrainian President Volodimir Zelenskyy of his highest state honor in June after Zelenskyy named a military unit after the UPA, according to DPA. Prime Minister Donald Tusk echoed these sentiments, stating that memory and truth must help build a better future free from hatred and contempt. He announced plans to erect a new monument in Warsaw dedicated to civilian victims of massacres. “In Warsaw, we will build a wall of remembrance with eternal flame and the names of all found and identified victims,” he wrote on social media. Defense Minister Wladyslaw Kosiniak-Kamysz addressed a ceremony in northern Ukraine, calling for cooperation between Warsaw and Kyiv to move forward together and accept responsibility for the past in building a better future. His remarks underscored the need for reconciliation despite lingering historical grievances. Historians estimate that between 1943 and 1945, Ukrainians systematically killed more than 100,000 Poles, predominantly civilians, on territories under Nazi occupation that are now part of Ukraine. Estimates of the number of Ukrainians killed in retaliatory attacks by Poles vary significantly. Polish estimates range from 10,000 to 12,000, while Ukrainian claims suggest figures between 15,000 and 30,000, according to PAP. The issue of wartime atrocities has long strained relations between Poland and Ukraine. Civilian casualties occurred on both sides during World War II, and the legacy of these events continues to influence contemporary diplomatic and political dynamics. The commemoration in Poland highlights the enduring significance of historical memory in shaping national identity and international relations. Efforts to reconcile historical narratives have faced challenges due to differing perspectives on the scale and nature of wartime violence. While Poland emphasizes the systematic extermination of its citizens by Ukrainian insurgents, Ukraine maintains that its forces acted in self-defense against Polish collaborators and Nazi occupiers. These divergent views complicate attempts to reach consensus on historical accountability. As Poland continues to observe its national day of remembrance, officials stress the importance of confronting difficult histories to foster mutual understanding and prevent the repetition of past conflicts. The upcoming installation of a memorial in Warsaw aims to serve as a focal point for reflection and dialogue on shared historical experiences.