These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Great Dictator
Harsher in Hindsight: Chaplin only had a faint picture of the atrocities occurring in Nazi Germany when the film was being produced, based on what refugees from Europe had told him. Back in 1940, the worst things have not started yet anyway. He stated that had he known the full extent of the Nazis' crimes, he'd have never made the film.
The concentration camp scenes in particular make for quite awkward viewing. Perhaps the most In Your Face example of this trope is when the Jewish Barber first arrives at the camp. Whereas all the prisoners walk in one direction, he walks toward another. When one of the guards asks him where he's going, he cheerfully answers: "The Smoking Room," before being pushed the other way. In Auschwitz, prisoners were pointed to walk in one direction or another, and people waved in the wrong direction got sent to gas chambers.
Memetic Mutation: For some reason the Rousing Speech has been seeing some spread, in the form of clips like this one. Such clips are rather frequently posted under the title "The Greatest Speech Ever Made", or some variant of it.