WikiLeaks. They stole documents and they are publishing them without the consent of the owners. The fact that this owner is the government is irrelevant.
How would you feel if it were your personal emails that were published on a public web site like this?
Just on the off-chance that you are serious: it is of the utmost importance that the owner is a government, not a private person. The argument is that the government is keeping secrets from its people without the people being able to change that by normal means.
You are also incorrect about Wikileaks stealing any documents. They are only publishing.
Ah, but their existence bore YouTube, and without YouTube, where would we be then?
What did Mark Cuban ever do for you?