Phone call statistics could potentially be useful, though. For example, someone who makes a lot of international calls to Middle East for no apparent reason would warrant a closer look.
What? No, absolutely not. Surveillance without judicial oversight and approval, and a corresponding audit trail that establishes probable cause is a violation of the surveilled persons' right to privacy. We live in mostly free societies here, and one hallmark of these societies should be an implied level of trust towards its constituents.
Terrorist threat is very real, so steps should be taken to identify who may pose such a threat.
Is it? Is there a real threat towards american or european citizens to be injured or killed in domestic terrorist attacks? Is that threat sufficiently large to warrant special treatment for these cases?
I personally do not think so. Giving terrorists credence by elevating them to the level of enemies of the state gives these idiots a level of legitimacy they simply do not deserve. Treat them as criminals, not as enemy soldiers.
NSA doesn't put people in jail just for, say, talking to some distant family in the Middle East or searching for bomb-related stuff on the Internet because you're doing a PHD in chemistry. If something regularly happened as a result of such vague clues alone, tens of thousands of people would be affected.
They do, however, flag your name for further investigation, which may result in unfortunate events at the airport next time you want to visit your family.
There are already dozens, if not hundreds, of documented cases where people found themselves the subject of travel restrictions because they happened to have names similar to those of other persons of interest. So something is already happening based on such vague results, and it is not good.
Also, we have to ask ourselves, is there any other way of detecting a terrorist early enough? They're indistinguishable from normal people otherwise, and stopping a bombing in progress is pretty much skirting the edge of a disaster. There are human lives at stake here, so relying on the police's capability to stop the bombing seems reckless.
I can make the same argument, with much more actual weight, about car accidents. Let me show you:
"Also, we have to ask ourselves, is there any other way of detecting a bad driver early enough? They're indistinguishable from normal people otherwise, and stopping a car accident in progress is pretty much skirting the edge of a disaster. There are human lives at stake here, so relying on the police's capability to stop the accidents seems reckless."
There are far more people killed in car accidents each
day than successful terror attacks can accomplish in a month. So why aren't we doing stricter controls of car drivers and cars?
EDIT: Here's the thing for me: I do not care. The amount of infringement into our collective privacy necessary to make absolutely sure no terror attack goes through is far too high for an open and free society to bear. If we turn into a locked down, shut in, scared police state, can we still be said to be living free? Terrorism is a problem, yes. But panopticon surveillance is a far greater one.
EDIT END.
Now, the transparency thing is another question. FBI does it right, NSA does not. CIA is concerned with foreign intelligence, so I'd say they can be forgiven somewhat.
No, they can't. Billions upon billions of dollars, euros, and other currencies get pumped into the intelligence apparatus every year. A government has to be accountable for this expenditure, and must provide cause for said funding. "We stopped X attacks before they happened" is not a metric that can be used effectively, since it relies on information we simply do not get.
NSA, on the other hand, definitely needs to provide some way for the public to hold it accountable for it's actions. Both for what it's doing, and what it's not. For example, is there any way to check if they're actually monitoring those phone lines, not drinking coffee and watching porn all day? They're paid from taxpayers' money afterall, so it'd be nice to know if the agency is doing anything, or just saying that they are.
You have no idea what the NSA does, do you. There is noone actively monitoring anything, data gets caught and added to a database for later study.
We do not know what data is being collected, or how it is used. We can make inferences based on the Snowden leaks, but that's it. And that, IMHO, is not enough.