Re: What goes around, comes around...
There are, of course, those of us who are skeptical.
1. "It's necessary to defeat terrorism".
This is a strong claim, not (at least yet) well supported by facts. Maybe it could be, but in the absence of strong evidence we are entitled to conclude that it is untrue and put forward to justify activities that make even the system operators a bit uncomfortable.
2. "If you have nothing to hide, you have nothing to fear".
Probably true, for now. Especially for those who enthusiastically supported the present administration in the 2012 election. The large, although not clearly known, amount of citizen-tracking data could be a temptation. There isn't much evidence of that now, but the next administration, or the one after that, might be less benign, and the temptation to make use of the saved data could be irresistible. Further, it sets a precedent that, in the event of another terrorist incident, surely would be used to justify yet more, and more intrusive, data collection. For these reasons, we must look with great distrust on the entire enterprise.
The administration needs to come clean in a way that can be judged independently about exactly what data are being collected, how it is being used, and exactly how effective in serving any public purpose. In addition, they need to show why warrants as described in the Fourth Amendment won't serve. If they cannot, it is justification enough to terminate the program.