My daughter ChloÁ« brings to our attention a short propaganda film made by Walt Disney in 1943. Called Education for Death, it explained to the American movie-goer just how Hitler’s totalitarian apparatus, having got hold of Germany’s children, turned them into obedient Nazi myrmidons.
The film is apparently well known — it has a detailed entry in Wikipedia — but I hadn’t heard of it before. Perhaps you haven’t either. Here it is. (And if the video’s gloomy tone gets you down, cheer up with this effervescent little item, featuring Donald Duck.)