This man was a comedian of the silent film era from the early 20th century. A man who brought comfort and laughter to people in a time of war and despair.
The speech in the background was taken from the movie The Dictator in which Chaplin played the role of Adenoid Hynkel, Dictator of Tomainia. In the end, he dropped out of his comic character to address the audience directly in a speech denouncing dictatorship, greed, hate, and intolerance, in favor of liberty and human brotherhood.
Take the time to watch this, it is worth it.