I advocate nonviolent means to fight dictators for two reasons: I don't like seeing my innocent neighbors get killed, and I have seen nonviolent means work to overthrow dictators. The largely peaceful transition from martial law and one-party dictatorship to pluralistic rule by law with free press and free elections that I saw in Taiwan[1] is just one example of a people power revolution where the dictator was baffled because there were few violent incidents on the part of the opposition to stir up a violent response from the regime. There are other examples from around the world.
An organization that collects real-world advice on how to win freedom even under dictatorship nonviolently, and how to keep the revolutionary movement from turning into another dictatorship, is the Albert Einstein Institution founded by Gene Sharp, an occasional nominee for the Nobel Peace Prize. I have recommended before here on Hacker News that readers who are really, truly interested in winning freedom for themselves and guaranteeing freedom for people around the world ought to read the free, downloadable materials on the Einstein Institution website.[2] If you are not willing to learn the art and craft of forging a cohesive, effective resistance movement based on real-world examples, this is all just talk. Talk is cheap. I know actual freedom fighters who succeeded against dictators whose techniques included total control of all mass media with "prior restraint" of publication and complete domination of the country's education system and targeted assassinations of opponents. The dictators still lost. You (we) can win, but only if you (all of us) learn to fight effectively. That doesn't take violence. Winning in a people power democracy movement does take mental toughness, because the dictator's side could use violence, but always the people outnumber the rulers. The people just have to learn how to stand together, overcoming their own fear.
Start your reading with From Dictatorship to Democracy: A Conceptual Framework for Liberation if you are wondering where to start among the several handbooks on the Einstein Institution website.