Reality check, the NSA, Bush and increasingly Obama, the whole US Government and it's justice system, etc. don't represent the American ideal. But with a few exceptions I would wager that I would rather live here then almost any other country in the world. What is "American" comes from you and what you viewpoint is of that ideal. For me what constitutes as American has much more to do with my relationships with people here, who I meet, where I live, then anything stupid the NSA or government does. I think overall what's kind of silly about this is you're taking something that realistically is extremely abstract to the vast majority of people (how many of use are dealing with Snowden's problems on a personal level here?) and applying it to a whole country and it's people.
Don't get me wrong, I think people should be angry with what's been happening, the eroding of the American dream, increased inequality, the continued militarization of the police and it's overall unaccountability, lack of privacy from both the government and businesses (let's not forget what type of data the Google's and Facebook's of the world legally have on you). It's going to take indignation and anger to result in the action that might change things.
But, to turn around and say some thing like "America is dead"? No, personally I see things that make me proud of my fellow Americans, the goals they're accomplishing, the big dreams they have, the relationships they develop and grow from. I see those things happening on this forum everyday. No, to me America is around and kicking all around, the proof is right here in front of you, and it's worth fighting for. I'm not willing to write it off just yet.