Idiocracy

From the 2006 Mike Judge film 'Idiocracy'. Here's a quick summary, for those who haven't seen it:
Joe Bauers, an Army librarian, is judged to be absolutely average in every regard, has no relatives, has no future, so he's chosen to be one of the two test subjects in a top-secret hibernation program. He and hooker Rita were to awaken in one year, but things go wrong and they wake up instead in 2505. By this time, stupid people have outbred intelligent people; the world is (barely) run by morons--and Joe and Rita are the smartest people in America.

In one scene, they go through a 'History of the World' type amusement park ride, and a Charlie/Hitler is seen.
The footage can be viewed here.
Chaplin was played by actor Evan Williams.