Peace on Earth is a one-reel 1939 Metro-Goldwyn-Mayer cartoon short directed by Hugh Harman, about a post-apocalyptic world populated only by animals. Two young squirrels ask their grandfather on Christmas Eve who the “men” are in the lyric “peace on Earth, good will to men.” The grandfather squirrel then tells them a history of the human race, focusing on the never-ending wars men waged.

Peace On Earth (1939) – Classic MGM Cartoon from megarachnid on Vimeo.