What Snowden did was actually pretty courageous considering the consequences of his actions could lead to very serious prosecution later on. A traitor? Not necessarily because some of what he revealed was abuse of power and questionable activities by the NSA. They have been chastised already in the past for other misdeeds.
As far as what the government does is all for the good of the country, absolutely not true. Our government has myriad problems and has been involved in all kinds of troublesome and questionable activities through the years (i.e. – CIA) among other agencies. The Patriot Act in and of itself is a good example of the American government not having your best interests at heart.