In 1945 and 1946, a group of Polish survivors of Nazi persecution who were refugees in Sweden collected evidence and testimonies from other Polish survivors about their experiences in Nazi ghettos, concentration and labor camps. Driven by a moral duty to document the Nazis’ crimes for history and justice, they provided evidence and testimonies to early war crimes trials, including the Nuremberg and Subsequent Nuremberg trials. They thus contributed to retributive justice and human rights through ‘top-down’ processes. However, I argue that an overlooked aspect of the significance of their work is that they were also contributing to justice and human rights ‘from below,’ in part by taking a relational, restorative justice approach. While such a view of victims’ involvement in justice and rights processes is not uncommon today, placing victims of Nazi persecution in this context sheds new light on the entanglements of war, the Holocaust, and human rights.