Actually, it's not Obama and Co. you should feel embarrassed for, it's the entire political establishment in the U.S. you should feel embarrassed about. This has been going on for years, it's just that it was all finally revealed to the public on Obama's watch. I applaud Snowden and Manning for their contributions to getting the truth out there, truly... but I don't blame Obama. If Snowden had gotten there sooner, it would've come out under Bush. If it had taken longer, it would've come out under the next president. You can't blame the current president for all the wrongs in your country, he didn't create most of them. He didn't set the ball rolling, he's really just playing with the cards he was dealt... and sure, he may suck as a president but he's not entirely to blame for your country's political woes.
Let's remember, there were people who were so upset with American foreign policy that in 2001 they were willing take a ridiculous amount of risk to stage a massive terrorist attack on U.S. soil. 8 years before Obama became president... on W's watch. But W. wasn't president until January 20, 2001, I would wager such an attack took far longer to plan than the 7 months and 22 days that Bush Jr. had been president. So it wasn't retaliation for anything he did either.
I'd like to believe that people don't just stage terrorist attacks for no reason. People [I really hope... I have to believe] are mostly good. When treated with respect and dignity, they don't just stage terrorist attacks on other nations.
That had nothing to do with Obama's foreign policy... you could perhaps argue it had little to do with W's... except that he's the son of Bush Sr. (so some influence there). The war on terror began on W's watch... but realistically it was his father who started shipping American troops en-masse to the middle east shortly before the Gulf War. If you recall, at the time, everyone was concerned that Bush Sr. was going to start another Vietnam... on the Middle East... which has now been turned into this Islam vs. the U.S. mess. [I would definitely be worried about what will happen if Jeb Bush becomes the 45th President of the United States - unless he wants his legacy to be coming in and cleaning up the rest of his family's mess.]
So should you feel embarrassed for Obama? I don't think so. He's not done much worse than his predecessors. He's just failed to clean up the mess he was left with. To be honest, I'm not entirely sure there's a single living person who could clean up the mess that is the U.S. political system without getting themselves assassinated in the process.
I wish along with what he uncovered, Snowden had uncovered who really killed Kennedy - or at least, who planned/commissioned it... and what really happened in Roswell? I mean, I'd really like to know are they telling the truth or not? If not, what really went on there? Is there a conspiracy? Was it covered up? Are all the people written off as crazy actually telling the truth? Having this constant is it true isn't it true is tedious. The evidence of conspiracy is sketchy at best, fabricated at worst, yet there is so much passion behind these "conspiracies" you have to wonder, is there any truth whatsoever to those fighting for them?
Given everything recently that shows there has been this conspiracy to spy on the masses that reaches to the very highest levels of government - you have to wonder, what else don't we know yet? You have to wonder, what has still yet to come to light?