Polish-Jewish historian, journalist and Holocaust survivor who served as the editor-in-chief of Sztandar Młodych, a nationwide daily newspaper of the Union of Polish Youth in 1956–57 and from 1958 onwards, a columnist for the moderately critical weekly Polityka as the head of the weekly's historical department. He acted in Auschwitz: Inside the Nazi State (2005), The Living Witnesses (2021) and Simon Schama: The Holocaust, 80 Years On (2025).