Snowden isn't living in Russia because he is unaware of its human rights abuses. He is living there because if he lives anywhere else his ass will get deported.
The guy met his martyr quota already, he doesn't need to go to jail.
I've always been curious if he would be okay if he could get to a country like Iceland. I know traveling to Iceland by plane is a no-go because of passenger manifests and the US government's willingness to down any plane to check if he is on board. However, I don't get why he hasn't attempted to get smuggled out of the country by boat via a northern port along Russia's huge coastline. With enough sympathetic supporters, I would imagine that this is a very workable plan since surveilling ocean ports and ocean vessels is an order of magnitude more challenging than surveilling air transport.