That movie was also all over the Disney Channel when I was a kid. Many other movies have related messages.

And much of the public library books were a couple generations old, plus there was the Cold War, which meant lots of exposure to anti-fascism messages, and to anti-Soviet-like messages.

So, today, people of a certain age, who paid attention in school, have been programmed that the secret police saying, "Your papers, please" and sending people off to concentration camps, are obviously the very bad guys, and America is the good guys who don't do that. People with that upbringing would see certain textbook political maneuvers and tactics coming from a mile away, and be concerned.

To counteract that IMHO great programming, you'd need something extreme, like Rupert Murdoch and others pounding large swaths of the electorate with propaganda for decades -- to get them to support some politicians that are stereotypes we were told for decades before are outright evil.