I would say a peaceful change by vote of the people (not politicians) would be a better way than violent revolution. Violent revolution can be justified, but it will end up hurting many people and destabilizing a country. War from internal and external parties would be garunteed. Peaceful revolution is not an easy nor even plausable outcome, but it would harm far fewer people.

Im curious: How does not voting show you wish for revolution? My view is that I'd rather vote for someone who is working within the system (corrupt and broken though it may be) than someone who wants to tear it down and install a dictatorship. Not voting just means you're complicit and signals you don't prefer one over the other. I don't like either, but i definitely have a preference.