Your question of right/"wrong" is a matter of morality, not legality. Stealing bread to feed a starving person might be morally good, but legally wrong, and nobody should expect to avoid legal consequences because of it.

In the case of civil disobedience, those involved do NOT attempt to flee from justice. Being arrested and facing the legal system is an integral part.

Assange may just get his chance to emulate Ghandi by spending years in prison...