From reading this, I get a feeling that you are just repeating propaganda from the Chinese Communist Party. The stability (or in Chinese term, "harmony") over freedom argument is especially familiar to anyone paying attention to Chinese media. Even in Hong Kong we read that all the time from the left-leaning newspaper.
This problem is that this stability is established on suppression of dissents. It does not actually address the cause of instabilities. The unfairness in the Chinese society is well known. Inflation is high again. Government officials are corrupt. Abuse of power is common, often illegally but usually the officials are able to get away with it. All these contribute to the anger of the less fortunate crowd. To make matters worse, the media, usually controlled by the government, tend to downplay or simply ignore their plight. This effectively removes a vent for them to express themselves in the society. People don't protest because they are stupid (an false assumption you base all your arguments on), but because they are expressing their anger in certain way.