Make Mine Freedom (1948) (2 minute clip)

"When anyone preaches this unity, tries to pit one of us against the other through class warfare, race hatred or religious intolerance, you know that person seeks to rob us of our freedom and destroy our very lives."

"Make Mine Freedom" is a 1948 cartoon that warns against the dangers of "Ism" (communism, socialism, and fascism). It was commissioned by the Extension Department of Harding College, Searcy, Arkansas. The Animation studio was John Sutherland Productions, the directors were Joseph Hanna & William Barbera, and the producer was Fred Quimby.
Full video: https://www.youtube.com/watch?v=fyeRO5rBteY