Julian Assange is of course the founder of Wikileaks. Unless you've made an effort to avoid the news completely, you've been hearing a lot about Wikileaks lately.
In a free society we're supposed to know the truth,... ...In a society where truth becomes treason, then we're in big trouble. And now, people who are revealing the truth are getting into trouble for it.
I fully support Wikileaks in publishing the diplomatic cables. That sort of thing should be public information anyway. There is very little that a government should withhold from its own people. Strategic troop locations come to mind as one thing that has a legitimate reason to be classified. Remember, the US government is of the people, by the people, for the people.