Every time I post on this, I get modded toll by somebody with an agenda, but I think it's important so I try again.
Assange is a narcissist. He isn't doing anything honorable by dumping all this classified stuff. Leaking information which reveals wrongdoing is noble, wholesale dumping of classified material is chaos. Some secrets are secret for good reasons. For example:
What good comes from leaking the cables of a diplomat clandestinely investigating human rights abuses? It simultaneously gave the oppressive regime a reason to be more oppressive and the names of people to go after, but Assange knows best - people have a right to know! See WikiLeaks just made the world more repressive
How about undermining a democratic reformer in Zimbabwe? Did that do any good? I have a good friend in Zimbabwe, he's in enough danger already just for supporting the MDC. Now a cleptocratic tyrant has the excuse he needs to hold on to power, prolonging the misery of an entire country, and my friend might end up in jail, or dead. But I suppose the death and deprivation of faceless Africans won't keep Julian up at night.
Oddly, one case where Mr. Assange saw fit to withhold information was the "Collateral Murder" video. Not because it could endanger somebody, but because it didn't fit with the narrative he constructed. Rather than objectively present the video with the relevant context, he purposefully left out any mention of the convoy that was approaching or the attacks that had recently occurred that same day, implying that the helicopter was just randomly firing at a group of people. He implies that the pilot's identification of weapons was incorrect, but fails to provide a copy or even a link to the report (which was released, though names are redacted), which details fun facts like the RPGs and AKs they found on and around the "civilians". He doesn't mention that the Reuters employees had not told anyone where they were going to be, and were not wearing ANY press identification. I could go on...
The point is that Assange has always had an agenda, and it certainly isn't exposing government wrongdoing, or even presenting the uncolored, unfiltered truth (if it doesn't suit him). I don't know why so many people here idolize him.