When summing up a general situation, Amos, one can't get too specifically into the many details or one has to go to, what? 10,000 words?

But how does war propaganda work? With very simple messages. You have to scare people to get them to support a war...or make them angry (which is another way of scaring them). The USA, Iran, and Israel all give much thought to how they can scare their people or make them very angry in order to get them to back some aggressive national policy. That requires very simple messages, messages like "They intend to destroy our way of life!" or "They murdered babies!" or "They're insane fanatics and can't be trusted!"

People are easily persuaded by their deepest fears. They see their own madness reflected in the face of their supposed enemy.