Hitler and his Minister of Propaganda, Joseph Goebbels, took great pride in their campaign to instill fear in the German people between 1933 and 1945.

They understood that the strongest and most renewable emotion in mankind is fear, and that, once a people have been won over by fear, there’s very little that you can’t get them to do.

To provide a focus for fear, a demon is necessary. Ideally, the people already fear a demon of some sort. If so, this demon should be co-opted and the fear magnified.

However, if no demon is already perceived by the people, one must be created.