What is the author’s message to the planet?

The author's message to us is that Dictatorship is bad, and also people get pain because of dictatorship. During the World War two, when Germony controlled most of Europe under Hitler's dictatorship, all the jews had to be in hideing. Just my the opinion of the dictator, that the jews are bad, so much jews died and they had to hide for a lot of years in fear. The author is trying to say that a same human being doesnt have right to harm other and control them.