Yeah, I always tend to look at things like this from the perspective of myself, a good citizen. Does a street light watching me walk impede on my freedom? Does the ability to detain me for terrorism impede on my freedom? I'm not a terrorist and I'm not a criminal. It wouldn't bother me any more than security cameras at stores/airports/casinos that watch what I do. Why are you against things that would cut crime?
I always find it overly dramatic when people take issues like this and say "Oh noez America is losing the freedom we once all loved and cherished!"
We still are the land of the free.
Cardinal Richelieu once said: "If one would give me six lines written by the hand of the most honest man, I would find something in them to have him hanged."
Privacy is of the utmost importance because without it, information gained through surveillance gets abused, by for example being sold to marketers or used to spy on political enemies. Even if I have nothing to hide I don't want my every move to be traceable and recordable, widespread police surveillance is pretty much the definition of a police state, and I don't think I have to explain why that is bad.