I have always given infinitely more creed to the idea that powers that be knew of the possibility of 9-11 but did nothing to prevent it because it would dramatically change the landscape of society in a way that benefited government agency. As the years pass, less and less people in places like this were even alive back then, let alone of an age where they were politically aware and seem to have no concept of just how large of a tectonic shift that was. Pre 9-11, if you asked your average blue collar, F-150 driving, country western listening, bud light drinking on a friday night average joe how they felt about government invading your mail, phone and other sensitive data, you'd get an angry yelling rant.
But after?
That average American was horny as fuck for big daddy government to inject itself into our lives to "Stop the next 9-11". You had retards like Toby Keith and Alan Jackson, along with a dozen other mainstream acts, in everyone's ear every 15 minutes reminding people to be mad, scared and violent about it while wrapping themselves in the same iconography that the government was using to sell you it's end to privacy. You were either a Patriot who was for America and wanted to make things right, or you were with the terrorists and deserved the rope. (kinda sounds familiar, now that I think about it)
To this day, I feel like the word "Patriot" has a completely different meaning to me and I can't take people seriously when they use it unironically after what being a "Patriot" enabled back then.