No, wiki-leaks should not be shut down. The owner should not be arrested. The harassment is not about "security" -- it's about secrecy and power.
Naturally, your rulers want to shut up Julian Assange. Anything that challenges or exposes ruling elite chicanery has to be shut down. Also see what happened to e-gold
The brainwashed, feeble-minded, and lackeys of the ruling elite naturally think WikiLeaks should be shut down.
A few others of us commend Wiki Leaks.
BTW, the U.S. government couldn't get Al Capone on anything other than "income tax" violations.
Read what Ayn Rand, in Atlas Shrugged, had to say about the real purpose of so many laws -- it it so that you will be guilty of SOMETHING.