I'm honestly expressing no opinion on Assange's actions.
"I'll help" is not a problem, if they are not helping someone to commit a crime (clarification: when I say "it's a problem" I mean it's a problem for whoever says "I'll help" because they are being accessory to a crime).
What routinely escapes from the prosecution of the law is irrelevant.
The fact that I have downloaded copyrighted material without any consequence doesn't make it legal.
A crime is a crime by the law, the court has to decide if you either committed it or not (regardless if you did it for real, if the court can prove you did it, you did it).
That doesn't mean that killing a baby and downloading an episode of a TV show illegally is the same thing, it means that if I helped you to download the content and you are accused of downloading that content and the court can prove it, I am accessory to the crime even if people routinely get by.
> unauthorized possession's of classified information is a crime
Are you referring to this?
> Whoever, being an officer, employee, contractor, or consultant of the United States, and, by virtue of his office, employment, position, or contract, becomes possessed of documents or materials containing classified information of the United States, knowingly removes such documents or materials without authority and with the intent to retain such documents or materials at an unauthorized location shall be fined under this title or imprisoned for not more than five years, or both.
What journalists do is not retain them, it's publish them, which AFAIK is not illegal.