Su Liping, professor at Tsinghua Unversity, says there were 180,000 protests, riots and other incidents, protesting economic injustice in 2010. Most of the incidents were against land grabs, corruption and abuses by local officials, and unpaid wages. Inflation has hit the poor, migrant workers and people with low incomes hardest. Food prices were up 13.4% in August over the same month prior year. Pork prices were up 52.3%. Other problems are now meshed in with inflation. Local government debt in China, according to the National Audit Office, was 10.7 trillion yuan in June 2011. The National Audit Office estimates 23% of this, or 2.5 trillion yuan, depends on land for repayment. Analysts say China's local government made repayment in 2010 using the 2.9 trillion yuan in revenue from land sales. The same amount of land has to be sold in 2010 to make repayment. At lower prices even more land may have to be sold. The danger say Orlik and Jie, is that inflation and the pressure to acquire more land- and consequently more land grabs- will pose severe risks to the social contract in China....