In the final moments of Charlie Chaplin's 'The Great Dictator' (1940), the Dictator of the fictional country 'Tomania' (Based of Germany) is accidentally replaced by his Jewish doppelganger, who has contrasting beliefs to him.
It turns out that Adenoid Hynkel, Dictator of Tomania, has high beliefs that fascism and national socialism is the key to saving his country but at the same time his doppelganger has insanely contrasting views towards the two, so when his doppelganger takes the stand and his mistaken as the Tomanian Dictator, he is forced to give a speech following the Minister of Propaganda's reveal to a new law which strips Jews and Non-Aryan Tomanians of their citizenship.
When he is told to speak on behalf of Tomania, he is visibly scared of what might happen next not only to his nation but the world. Despite this, Charlie Chaplin, not only in the context of the movie but in real life too, realises that he cannot stay silent, that he can't always be the quiet comedian he had become famous for in the first place, but that he must speak upon what Germany is truly doing at this time in history and this movie is an accurate representation of that. When he steps up, he denounces the laws and what he is made out to be by his political party, then he goes on and creates possibly the most inspirational, famous and life-changing speech of all time, and at this moment in history, the world wakes up. People realise what is going on in Germany and how we can stop it and after 5 more years of hard work from the British, American, French, Soviet and more armies, it is finally stopped...