Thanks for your question. There is more than one way to define rebellion. Too often, the common assumption is that revolution, rebellion, and resistance must be violent, or the violent tactics are the "best" or "highest" revolutionary approach. We disagree with those limited definitions. Our view of rebellion is broader, and encompasses many kinds of struggle: petitions, demonstrations, civil disobedience, education, electoral movements, and much more. It is the participation of workers in those movements that leads them to conclude that more fundamental, radical change is necessary.
It is the active involvement of millions, of tens of millions, that will determine the progress, speed, and outcome of our revolutionary struggle. Millions in motion provide the necessary political power to overcome the resistance of the capitalist system.
Most often, the resistance of the capitalist system has been the cause of violence, not the revolutionary movement itself. As one of our greatest thinkers, Henry Winston, put it, our goal is to stop the capitalist class from imposing violence on the revolutionary process.
Hope this helps.
Marc