How do you think the future for mankind will unfold?

You are ignoring what gives China it authority. Modern technology. That will make the common man more influential They can organize and communicate which is the backbone of change. Yes, the USA is going the way of Great Britain, but change is also coming to China. In fifty years the China of today will not exist. People will only tolerate the form of government that will help them to accomplish their personal goals. As actions in the Middle East attest to, governments can be altered. Human rights will largely be honored because it allows people to be their best. China has always been a pragmatic people and they honor results above method.