With its powerful allegories about cultural ignorance and genocide La Planète sauvage AKA Fantastic Planet is a surrealist story based on the Soviet occupation of Czechoslovakia.

This visually powerful and inventive animated feature is set in a far distant world where human beings or "Oms" have been domesticated by the gigantic alien Draags. One revolutionary om breaks away in an attempt to free his people...But will the Draags oppression be too strong?

http://en.wikipedia.org/wiki/Fantastic_Planet