This gets to be a complicated question. Basically, if you believe that your government is corrupt and no longer represents you, you may have the right or even a responsibility to revolt [1]. This gets fuzzy with right and wrong. You see if you pull off a revolution, you get to set the rules. You may even be able to call the losers criminals and try them as such. In some cases you could even make up laws and try the prior government members for them retroactively and get away with it if enough people think that what you are doing is right and just. However, until you win, the current government will consider you a criminal.
General McArthur, after the fire bombing of Tokyo and other large cities in Japan said that if the US doesn't win the war, he will be a war criminal. the definers tend to be the winners at least initially. From the longer term historical perspective, not so much, for example, Japanese internment during WW2.
http://en.wikipedia.org/wiki/Right_of_revolution