Even at highest level of hysteria no propaganda machine will use anything that could discredit few things:

• Authorities of enemy as a system. Propaganda could tell that it is a bad dictator/president/leader/whatever, but never will say anything that could seed a distrust of enemy population to the institute of authority itself.
• MSM of enemy. Propaganda could tell that they lie, cheat, spread disinformation, whatever, but never will say something that could ruin the whole concept of MSM in enemy country
• Banking system of enemy. Again, propaganda will never discredit banking system in the eyes of enemy population
• Laws of enemy. Propaganda will never call enemy population to ignore their laws.
• Voting system. Propaganda could tell that there was voting fraud, but will never try to convince enemy population that voting is a complete hoax from the beginning.

Interesting, that most powerful things propaganda could use against enemy never really used.