You are sadly witnessing one of the darkest consequences of 9/11.
It was such traumatic event for the entire society, due to its stark reminder that we weren't safe, and the modern world hadn't solved every problem, after decades of comfort.
There's a feedback cycle of increased fear, leading to unrealistic demands to fix it, leading to "solutions" that are immensely amplified by the media, and the politician's justifications of the solutions. That leads to increased fear...ad nauseum, to the point that you could credibly do a "Exisentially frightening" find and replace for every instance of "terrorism" and "Exisentially frightening (noun)" for terrorist. They're increasingly synonymous, and terrorist is the one losing definitive meaning.
I don't blame politics for this. We elect them by popular vote, and don't usually reward them for giving us a stern talking to, rather than addressing our exisential fears. But, they could have avoided the types of solutions they've trumpeted. Solutions that killed tens of thousands of Americans and foreigners, altered the way we live, and wasted trillions of dollars that should have been spent lifting ourselves up.
The terrorists won. They've done exactly what we know they wanted: create vast fear in the populace, and impose high economic costs, with relatively small acts committed by madmen.
Hopefully we start choosing more reasonable solutions, responsibly fund the ones we've found (the TSA caused multi-day delays in major cities this summer), and stop demanding the impossible from our politicians. Popular opinion about Middle East military action is tortured logic. You can't be mad about Iraq, Libya, and Syria. They express the full spectrum of action we can take — at least, as far as the general public perceives it. There's interesting distinctions, but few are well-informed enough to have that be informing their opinion.