They don't. That's why youngsters are the driving force for changes, they destroy. It is not a bad thing. The real driving force to make change is actually powe

They don't. That's why youngsters are the driving force for changes, they destroy. It is not a bad thing. The real driving force to make change is actually power. When these protests are aligned with some power, things go change. I am certain things won't happen in countries such as US or China. For smaller and weaker countries, maybe.