Usually hunger … if you look through history, change doesn’t happen in societies because people are poor, abused, imprisoned, impoverished or have a lack of luxuries … change often happens when people go hungry because at that point they all realize that if they have no food, they will die … and when they can see death, especially their own death, they no longer have anything to lose and will fight for some kind of change …

And even that want for change is dangerous because it can come in many forms … good change, bad change, fascist change, socialist change, democratic change, authoritarian change.