Interesting, intelligent analysis of American propaganda films and their societal impact.
Seems the American government took it's cues from the Nazi propaganda machine in this respect. They not only scared people silly, but they also used this venue to lie to the people about imagined problems. Thereby keeping people distracted from the dirty-dealing the government was/is involved in.
Duck and Cover! Duck and Cover!
Still remember the propaganda films during the Cuba missile crisis. Soviet takeover, had some religion throw in for good measure, scary stuff for a first grader.
I got an 'A' for hiding under my desk! The teacher didn't realize I was hiding from her - not the Russians.