We Cellar Children (1960)

A camera team is desperately searching for swastika graffiti. Finally they find a man willing to paint one -- on the window of his fathers nightclub. And he tells them also, how his father made a career between 33 and 45, while he helped to hide a communist, and then how he went into the lunatic asylum, while both - his father and the communist - made their careers after 1945.