No group of revolutionaries had demands which could be met only by harming the interests of some other group in the society. Chose one of the explanations sketched out above. There is much in both you will NOT use. Think through the interpretation you have chosen. IT will determine when your narrative should begin.
All stories have to start somewhere.
IT will suggest which events made the biggest difference the final outcome. Stories highlight events which shape the outcome. They are turning points. If you find yourself unable to decide how to begin or which events made the biggest difference, give yourself the opportunity to think through the interpretation you have chosen again. If you find you are still in a quandry, you will have to choose a different interpretation to support.