This is a strange conclusion considering non-democratic political changes cause plenty of chaos. Russian Revolution, the Chinese Civil War, the Protestant Reformation and accompanying violence, the Boxer Rebellion, all come to mind. Of course changing political systems will cause violence. Look at Kazakhstan. The current protests have very little to do with democracy in their cause. People would have been protesting high gas prices without the goal of having democracy. But autocrats will blame the political side of things when the cause is purely economic.

The real question is what happens once democracy has taken hold.