This movie is hyped up in some sort of frenzy; someone calls it a classic or likes the thought that someone is mocked and the next person repeats it until everyone gives this less than mediocre film a positive spin before viewing it.
This is Chaplin way past his prime still tying to be a keystone cop and using mundane slapstick humor years after the film industry became more sophisticated. From the first Scene you ask "This is a five star movie?" and it goes down hill from there. The sets are cardboard and the camera is still pretty much still.
If you kike film that mock the era a much better production was done by Jack Benny and Carole Lombard in "To Be or Not to Be" (1942).
The basic story is of a dictator and a barber that is not all there getting mixed identities. Chaplin gets to play both parts. The only redeeming value of the movie is the acting of Henry Daniell who played Garbitsch. Then again he is a veteran actor and can be seen in over 60 films including "Sherlock Holmes and the Woman in Green" as Prof. Moriarty.
All the people are over exaggerated stereotypes (maybe on purpose) and this distracts from the story like having a musical with songs not related to the movie.
If you can make it to the end of the film you get a long tedious speech in the style of Ayn Rand. The sun shines and the wind blows.