Google, Facbook etc tightly integrated with the nations intelligence agencies, mining the data found there to make secret lists that could result in assassinations, indefinite detention and torture.
Russias actions are for the most part overt, and rightly criticized, what the US does, it does so covertly.
If anyone speaks about the actions that the Us takes in secret they are hunted to the end of the world, and must seek refuge in Russia.
We hear a lot about Russian dissidents leaving Russia because they have their freedom limited. Snowden and Julian Assange have had their freedom limited to much more so than any of the Putin dissidents. (With the exception of the possibility that a couple of them have been assassinated)
Remember that the air plane carrying the President of Bolivia was forced to land and be searched by American allies under the suspicion that Snowden might be on-board. Can you imagine AirForce One being forced to land, and be searched by Russia or China? Becaus they suspected it might be carrying a dissident? I dont think so.