there were over 600 riots last year in China but they are publicized.  These were about a variety of issues but it shows that more and more, with the economy becoming freer, people feel that they have a right to express themselves.  (I forget where I heard this number)

there are also lots of riots in African countries because the Chinese companies import Chinese workers to work in their entreprises in Africa.  They consider them to be cheaper and more reliable than the Africans.  There is also ill feelings towards the Chinese who open $ stores in African countries and sell things cheaper than the native merchants do.
there have been riots in Tunisia for these reasons, but we don't get to hear much about them either.