I just readthrough the Wiki you posted and you are incorrect about the concept of the publishing of classified info:

The most recent incarnation of the exception was the grave and probable danger rule, established in Dennis v. United States, 341 U.S. 494 (1951). During this case, the wording was changed to the grave and irreparable danger standard. The idea behind the numerous versions of the rule is that if a certain message will likely cause a “grave and irreparable” danger to the American public when expressed, then the message’s prior restraint could be considered an acceptable infringement of civil liberties. The Supreme Court was therefore charged with determining if the Government had sufficiently met the “burden of showing justification for the imposition of such a restraint”

This is exactly the goal of wikileaks, as stated by themselves, that these documents would topple banks (the ones that needed 9 trillion in aid or else our economy would fail), and cripple government operations. They stated on their own one thing that is actually not legal and could result in censure.

Don't get me wrong, I am against a big government, there are so many leeches (you democrats know who you are ), but what he is doing is wrong. I think the government threatening folks for even looking at the documents is ridiculous, but to say that Assange is a hero is out there and just plain ridiculous. Its almost as if the whole thing is staged to allow the implementation of an internet censureship branch of the government. Add that up with TSA:
A few years ago, we threw a fit about taking off our shoes at the airport, now we would be grateful if that was it. How many bombs has TSA stopped? None. The only two in a decade that were stopped were stopped by the individual's error and other passengers. Now they want to add the scanners to sporting events, train/bus stations, and how many bombs have been exploded there? None. This is all a gambit to get the average idiot to accept control by the government.

Any man willing to trade freedom for safety deserves neither.-Ben Franklin. Give me my guns, my helmetless motorcycle riders, my caffeine impregnated alcoholic drink (rum and coke) and let me make my own choices. Give me warnings (like on cigarattes) and set me free. Hold me accountable for my choices (no public healthcare for lung cancer ridden smokers, fatty heart attack victims and so on)
So in a way, I agree with your point of view, just not when it comes to this douche clown.
There is more at risk than some hokey internet prank.