Most of those who are bashing Manning, Assange, Greenwald and Snowden are ONLY doing it because they happened to do what they did when there was a Democratic president. They know perfectely well that those four would have done the same thing if Republicans had been in the White House at the time, but can't accept that, for some twisted reason.
The issue is secrecy. Secrecy in foreign policy is always reactionary and always works solely in the service of death and mayhem. Secrecy in government cannot liberate any oppressed people, cannot lift anyone out of poverty, and cannot ever end a war. Face it people.
The only hope the world has is to get the whole damn thing out in the open and make sure that the majority of the planet's occupants KNOW everything that their(often self-designated) leaders are doing. The people themselves would naturally work for peace and justice...it's only the leaders who insist on maintaining division, continuing killing, and perpetuating injustice.