Der Herrscher

Der Herrscher (English: "The Master", "The Sovereign", or "The Ruler") is a 1937 German drama film directed by Veit Harlan. It was adapted from the play of the same name by Gerhart Hauptmann. Erwin Leiser calls it a propagandistic demonstration of the Führerprinzip of Nazi Germany.
Plot.
Matthias Clausen (Emil Jannings) is the head of Clausen Works, an old and prosperous munitions firm. He falls in love with a secretary in the office (Marianne Hoppe), and his children conspire against him in order to protect their inheritance. Clausen disowns them and bestows the firm on the state, confident that one of his workers capable of carrying on his work will arise.
Sources.
The movie was based on the play "Before Sunset" by Nobel Prize recipient Gerhart Hauptmann, but the themes have been utterly altered. A mild-mannered art collector in the play, he becomes the dynamic "first worker" of the movies, who proclaims the firm's duty to provide work and serve the community, and unlike the play, triumphs over his children's machinations.
Reception.
Some newspapers objected to the anti-capitalist bent inherent in having a man leave his company to the state; the official release contained a postscript by Goebbels repudiating such intentions. Writing for "Night and Day" in 1937, Graham Greene gave the film a mildly negative review, criticizing the acting and describing Jannings' portrayal as "the meaningless gaze of a sea-lion". Greene noted that he had enjoyed the "pleasantly savage opening", but that as the film continued it was increasingly necessary for the audience to assign emotions to Jannings' "marine" acting.