The majority of terrorist attacks that have been disrupted in the United States have been disrupted due to things like the Time Square bomber, who was caught by a hotdog vendor, not a mass surveillance program, not a cyber-espionage campaign.
Edward SnowdenCitizens with a conscience are not going to ignore wrong-doing simply because they'll be destroyed for it: the conscience forbids it.
Edward SnowdenThe [Barack] Obama administration almost appears as though it is afraid of the intelligence community. They're afraid of death by a thousand cuts - you know, leaks and things like that.
Edward SnowdenYou simply have to eventually fall under suspicion from somebody even by a wrong call. And then they can use this system to go back in time and scrutinize every decision you've ever made, every friend you've ever discussed something with. And attack you on that basis to sort to derive suspicion from an innocent life and paint anyone in the context of a wrongdoer.
Edward Snowden