Because of that War(1989)

An affecting 'talking heads' documentary which traces the stories of four Israelis: Yehuda Poliker and Ya'acov Gilad, two rock musicians bound together not only by their music, but also by their common experience as the offspring of survivors of the Nazi extermination camps; and those survivors themselves - Yehuda's father Jacko (from Salonika, taken to Treblinka), and Yaakov's mother Halina (from Warsaw, taken to Auschwitz as a teenager).