And More says: “You’d break the law to punish the devil, wouldn’t you?”
The prosecutor says: “break it? I’d cut down every law in England if that would take it to catch him”.
“Yes you would, wouldn’t you?” And then “When you would have cornered the devil and the devil would turn around to meet you, where would you run for protection, all the laws of England having been cut down and flattened? Who would protect you then?”
Every time you violate – or propose the violate – the right to free speech of someone else, you in potentia you’re making a rod for your own back. Because (…), to who do you reward the right to decide which speech is harmful, or who is the harmful speaker? Or to determine in advance what are the harmful consequences going to be, that we know enough about in advance to prevent? To whom would you give this job? To whom you’re going to award the task of being the censor?
http://howtoplayalone.wordpress.com/hitchens-on-free-speech/
If "caught" means convicted and "terrorist" means bomb maker or airline pilot with intent to crash a plane into skyscrapers it may be a discussion worth having. If "caught" means arrested or "terrorist" means gave $5 to an Islamic Medical Charity that turns out to have been shady it isn't even close to worth it on a practical level without even considering the principles and general human rights aspects.
My guess is somewhere in between but with people with as weak grasp of the language as the NSA seem to have I would be very careful.
[1]http://www.latimes.com/news/politics/la-pn-secret-nsa-survei...
A huge problem with the NSA's activities is that they are, or at least have been, so secret that it is impossible to even discuss in a meaningful way the political question you posed. This should be unacceptable even to those who think catching the 300 terrorists made the surveillance ok.
"We don't gather any data."
"We only gather metadata."
"Ok fine, we gather everything."