This is such a great propaganda piece! Donald Duck is a worker (well, slave really) in Nutzi land, which basically is nazi Germany. There's a fantastic piece when Donald is working in a factory in a way that reminds us of Chaplin in Modern Times. Throughout the film a really catchy song is playing that is making fun of Hitler.
In the end it turns to be all a dream and Donald is waking up in the USA. He turns patriotic while stating he's so glad to be a citizen in the United States. Oh well, it's propaganda, people!
Propaganda so well made, it should be hailed (no pun intended) for it, as the movie makes fun of Hitler and his gang in an effective, but also hilarious way. 8/10!