Charlie Chaplin was quite a political animal.
He grew up in London in grinding poverty and his mother went mad doing sowing in the dark to earn them money.
This led him to become a life long socialist (some would say communist) and his left leanings got him in trouble with the US authorities.
Many of his later films are quite political, supporting the working class against the rich and powerful.
There is the famous scene in a film (The Immigrant I think) where he is arriving by boat from Europe along with hundreds of others. They see the statue of liberty and shout "The land of the free" and then a sailor gets a rope and ties them all up. This symbolism was not lost on the US and he became disliked for his left leanings by the authorities.
He also had a thing for "young girls" and got into a lot of trouble when he put younger and younger girls in his films, then got one of them pregnant and was accused of rape.
Eventually he was virtually hounded out of the USA for his "communist" sympathies and for years refused to go back.
He only went back late in life to collect a special Oscar.
It is also worth pointing out that he was earning a FORTUNE back in the 1920s, running into millions of dollars, which is a lot now but was a HUGE amount then.