Here's a pre-upa short from 1946!
"An animated film, in humorous style, which makes the point that dissimilarities between people are not basic but result from superficial environmental influences. Based on the pamphlet 'RACES OF MANKIND' by Ruth Benedict and Gene Weltfish.
SPONSOR: United Auto Workers. PRODUCTION CO.: United Productions of America. DIRECTOR: Robert Cannon.
WRITERS: Ring Lardner Jr., Maurice Rapf, Phil Eastman. MUSIC: Paul Smith. ANIMATION: John Hubley.
Director: Robert Cannon.
Production Company: United Productions of America.
Sponsor: United Auto Workers
Audio/Visual: sound, color"
Thanks to Character Control