These are bad examples, because the legality of publishing Snowden and Manning's documents was in fact legally tenuous, and so far the publishers of the documents are protected largely by the enormous public welfare implications of the documents themselves. Especially in Snowden's case, that could change. Wait 6 months and see if the Snowden trove results in operationally relevant serious foreign intelligence disclosures that don't implicate the rights of US citizens, and then we'll see how much "journalism" really is a free pass to publishing "anything".