There are way too many Americans with a reality TV/summer blockbuster mindset. Like nothing truly bad can happen in our part of the world and we don't have to take anything seriously and everything is escapism and entertainment, even our politics and government. It's not and it never was and if this doesn't snap them out of their delusion then we are all absolutely doomed.
I think people have fallen into a sense of security.
For all the complaining, the U.S. today (or at least a few months back) was incredibly comfortable and had been for a long time if you were an average American citizen. Our struggles are real, of course, but the Real Bad Things were elements of the past (or rather, more easily ignore-able), but rather than pressing our gains and continuing to push for progress and consolidating our gains, we (like many populations before us) have fallen into apathy and disinterest.
That has allowed a regime to take power that (I truly believe) the vast majority of Americans oppose if they actually pay attention. Whether enough people have started paying attention...whether it has occurred soon enough, or if indeed I'm just being a pessimist, well, we should find out.