Austerity measures and social unrest - links?

An interesting article that explores the links between austerity measures and social unrest. An excerpt:

The frequency of demonstrations, assassinations, and general strikes rises monotonically with the scale of cuts. Only in the case of riots is there a small decline for the biggest cut-backs. In the case of demonstrations, the frequency of incidents appears to rise particularly fast as expenditure cuts pass the 3% threshold.

Full article - http://www.voxeu.org/sites/default/files/file/DP8513.pdf