Personally, I don't care. If the FBI is listening in on phone conversations fine, I don't talk about bombing any government buildings and would never do such a thing. If they are watching people of suspicion to see who they are talking to and what they are talking about good for them, helps keep me safe.
My point is this, on 9/11 we were caught with our pants down and the reason was because the FBI and CIA were too limited in their powers and because of that 3,000 people died. If some random FBI agent who I have never met finds out that I wear white socks and a black belt (OMG! Heretic!

) I don't care. I think it is common knowledge that Al Qaeda was cells in every western nation and they have to somehow talk to their associates to plan their attacks. If the FBI is allowed to monitor calls and discover that somebody is planning an attack and can stop it this was all worth it. I personally have nothing to fear, clean record, no intentions to attack my own country. If you ask me any who is worried about this has something to hide. Of course most people won't they just view this as a chance to get their name in the spotlight all in the name of civil liberties but the suspicion is still there none-the-less.