You can not include Julian Assange in the same group as Snowden and Manning.
Snowden and Manning violated laws, rules, conditions of employment.
Assange, being a foreign national, didn't violate anything.
Secondly, (this is just a thought ) where do we get an "expectation of privacy" in information that has left our control ?
We write our most personal information then expect it to be "secure" when left in an unattended tin box on the side of the street.
The fact is that the Genie, in the form of technology, is out of the bottle and if you want privacy it's OUR responsibility to take actions that provide it.
Expecting "them" to do something about it is how we wound up with foodstamps being the #1 employer in America.
American's demand that "they" do something about privacy and security, well, they did.