China hasn't actually been communist in a long time. I think the current situation is that the growing middle class will give at least tacit support, so long as they keep growing. With memories of the late 60's still hanging over that nation, they prize stability more than nations that haven't lost it in living memory.

Now, if the economy turns really sour, then like Indonesia in the 90's they may discover that the populace gets restless very quickly. But, for now, I think the Chinese middle class is not in the mood to make big trouble.