even us law has something called
whistleblower protection, because there is recognition that this kind of action may be necessary, ethical, and correct. The whole point is to encourage leaks of embarrassing or damaging information when it shows wrongdoing, government overreach, and to protect the individual from retaliation by the embarrassed government.
http://www.economist.com/blogs/democracyinamerica/2013/06/surveillance-0
let's get the most contentious point out of the way first: Edward snowden made the right call to make public the extent of the national security administration's surveillance of electronic communications. The american people can now have a debate about whether or not they consent to that level of surveillance in order to prevent terrorist attacks, a debate that we were previously denied by the government's unwillingness to disclose even the broad outlines of what the nsa was doing. There may be some slight risk that knowing more about the breadth of nsa surveillance will lead terrorists to take better precautions in concealing their communications. But that risk seems manageable, and is of far less importance than the ability of americans, and the rest of the world for that matter, to finally have an honest discussion about how much we think our governments should be able to see of our online behaviour.
one does not have to be a tin foil milliner to believe snowden acted with integrity and did something of value for free societies. To suggest it's one and the same with 9/11 conspiracy theorists is just an empty tantrum, not an argument.
For the record, there is also a big difference between snowden (who disclosed a specific piece of information, after he considered the potential harm to society of keeping it secret, and found the consequences of secrecy to be detrimental to society and alarming) and manning (who was having a tantrum of his own, had no purpose or reasoned consideration behind his disclosure except to "get even," and did nothing to mitigate the effects of leaking information indiscriminately.)