Edward Joseph Snowden is a computer specialist who employed by CIA.
Although he has ever contracted with NSA, he disclosed the secret documents which is about the NSA and the Five Eyes alliance set up the monitoring device secretly in other countries.
No matter in any countries, eavesdropping is an actus reus.
I think he is a Moral defenders. He has left his parents and his girl friend.
He dared to break the non-disclosure agreement and rebel against the government.
He sacrificed everything in order to defend the moral. He should earn respect with the truth.
All of these improve that he is a hero.