The article draws on a source material from The State Museum Majdanek Archives, a collection of video testimonies recorded in 1987–1989, to develop a fuller picture of social relations among prisoners of different ethnic backgrounds at the Majdanek Concentration Camp. From the fall of 1941 through July 1944, Majdanek functioned as a killing center and a concentration camp for about 150,000 prisoners from different European countries. Drawing on video testimonies as a type of oral history, the article traces the perception of Jews in the camp by Polish prisoners, their social interactions, and the interethnic social boundaries shaped by camp life.