http://arxiv.org/PS_cache/arxiv/pdf/1108/1108.2455v1.pdf This is a paper that has been getting alot of press lately. It was produced by the New-England Institute of Complexity, which is a group of computer scientists, physicists, and engineers who use the concepts of complexity theory (earlier known as chaos theory) to solve problems in science. The institute began studying the recent riots in the Middle-east, North Africa, and London, however, and applied some of their same methods to economics and social statistics; they were looking for correlations between all of these political movements, and the common conditions, and they were startled to find one common point all the riots had in common: the underclasses in those areas were at that time on average making below sufficient wages to feed themselves with the rise of food prices, while living a normal lifestyle for the given area.
From this data, they reasoned that the major catalyst in all of these cases was approaching mass hunger; the riots were generally occurring in places where people were dissatisfied with the autocratic dictators presiding over them, but in which people had too much to lose to protest vigorously or violently. When enough people were nearing the point of approaching starvation, however, there were enough people desperate enough to disregard their own safety to make bold stands againts their rulers. And in every on of the riots identified, it happened right near a peak of a curve relating wages to buying power and food prices. The same was also found to be the case in London, where a large disenfranchised class struggles to meet the massive cost of living, and is becoming increasingly desperate as wages and food prices change disproportionately.

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ImageShack.us If you look at a chart of the data of this index (relating wages to food prices), you can see that most of the rioting occured near 2 distinct peaks in that value, around the recession doldrums of 2008, and recently in 2011, as food prices soared this summer. From the past data, and the rates of change, these resarchers are predicting that another massive peak will occur during the summer of 2012, and a mightier one still during most of 2013. And another frightening figure is that more than 70% of the world, including the US and Europe, has enough people in a low enough economic state that the pre-conditions for rioting will occur near universally. These researchers predict that 2013, or even earlier, may be a year of profound social violence, and a stacatto of constant revolutions all over the developing world on a scale which was confined to merely the Middle East in 2011, which will dangerously disrupt world-commerce and stability.