This is the best argument I&#x27;ve read on the subject. Before I really didn&#x27;t worry about the NSA. I mean I didn&#x27;t think they were doing much good, since I think terrorism isn&#x27;t a significant threat. But I&#x27;m not that cynical or conspiracy-theory-ish to worry that they would abuse their power significantly. This is the first time someone&#x27;s tried to show that&#x27;s a real threat with examples from US history.