[quote=@Odin]This thing you're describing is the paradox of security versus privacy. It's a really standard thing but the rule is that you always trade like so; security <-----------------> privacy. For every step towards security you take, your citizens will have less privacy, and for every step towards privacy.. you get the point.
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Generally/simply, yes. Specifically/precisely, I think it's missing the mark a bit... There's no intrusion on privacy (well not publicly at least). A policy has been created to monitor public speech via social media. The spectrum doesn't really apply, because there was never any reasonable expectation of privacy in the first place. 

Now take something like [url=http://www.independent.co.uk/news/uk/arrests-for-offensive-facebook-and-twitter-posts-soar-in-london-a7064246.html]British web police[/url] -- that's a security vs. privacy matter. The US policy doesn't really do anything like that [b]yet[/b], though it's not hard to imagine taking that step after this one.