It's the fear that is based on lies and hatred that becomes a form of terrorism in itself.
Maybe more contempt than hatred but it's not unknown for politicians to play on the fears & prejudices of the electorate to score points over the opposition. I'm no longer prepared to accept all they tell me & prefer to make up my own mind. They're all the same in this respect & when it comes down to it one is no better than the other. In the same way I don't accept that those in authority are always right.
Back on topic. I sympathise with the security services as they have a very difficult job. I have no idea if they've been successful as their work is not usually publicised. It's quite possible that there's been no serious threat to US security since 9/11 or some could well have been prevented. I really don't know, nor does any other member of the general public. I get the feeling that diverting these airliners is being used for publicity to show the public they're at least doing something.