As a country we must make a conscious decision as to how much security is enough.  We've already felt the burden of handling conter terrorism, but does the cost and focus justify the means.  When American rights of speech and privacy are infringed upon, we need to take a step back and reassess.  Benjamin Franklin; a great American, believed that with the exception of high threat targets, the cost of security might be too great.  Here are his thoughts....

"Those who calculate chances may perhaps find that not one death (or the destruction of one house) in a hundred thousand happens from that cause, and that therefore it is scarce worth while to be at any expense to guard against it. But in all countries there are particular situations of buildings more exposed than others to such accidents, and there are minds so strongly impressed with the apprehension of them, as to be very unhappy every time a little thunder is within their hearing; it may therefore be well to render this little piece of new knowledge as general and well understood as possible, since to make us safe is not all its advantage, it is some to make us easy. And as the stroke it secures us from might have chanced perhaps but once in our lives, while it may relieve us a hundred times from those painful apprehensions, the latter may possibly on the whole contribute more to the happiness of mankind than the former." -Benjamin Franklin