Amen.

Based on historical facts, "Amen" (2002) is a powerful and thought-provoking drama that examines the complex relationship between the Vatican and Nazi Germany during World War II. The film tells the true story of Kurt Gerstein, a Waffen-SS officer who discovers that the poison gas he helped develop is being used to kill Jews in extermination camps. Driven by his conscience, Gerstein attempts to alert the world to the atrocities, but faces resistance from the Vatican hierarchy, leading him to take drastic measures to expose the truth.