I don't support the behavior alleged in this article, but I do genuinely believe Wikileaks was acting very unethically. It's one thing to release classified documents describing corruption or illegal/immoral behavior by the government, it's another to blindly release any classified documents you can get your hands on without any concern for others. In one dump of classified documents on the War in Afghanistan, it included the identities of many civilians assisting the US military. Those named have since been targeted by the Taliban. And this is a consistent pattern. Their leaks routinely include social security numbers, credit card numbers, private medical information, the list goes on. That information is not in the public interest and has caused great harm to innocent people. And I'm hardly alone in saying this. Edward Snowden, the Sunlight Foundation, and Amnesty International have criticized this practice.

EDIT: Quoting from Assange's indictment:

"After agreeing to receive classified documents from Manning and aiding, abetting, and causing Manning to provide classified documents, the superseding indictment charges that Assange then published on WikiLeaks classified documents that contained the unredacted names of human sources who provided information to United States forces in Iraq and Afghanistan, and to U.S. State Department diplomats around the world. These human sources included local Afghans and Iraqis, journalists, religious leaders, human rights advocates, and political dissidents from repressive regimes. According to the superseding indictment, Assange’s actions risked serious harm to United States national security to the benefit of our adversaries and put the unredacted named human sources at a grave and imminent risk of serious physical harm and/or arbitrary detention."