The Chinese regime has been doing a lot of it lately (of which attacks on Western short-sellers are a very minor example).
The latest burst of nationalism has come back to bite and if you want live updates follow Bill Bishop's twitter feed live from China:
Panasonic Plant in China on Fire as Anti-Japan Protests Escalate - Bloomberg http://bloom.bg/TZhhbb
banner in shenzhen calling 4 "nuclear extermination of japanese wild dogs" good 4 US pivot, just need to put $$ in2 it http://yfrog.com/ocoipuyj
kids attacking a Japanese car, supposedly in Zunyi per weibohttp://yfrog.com/kj31srcj
In Chengdu, police headed off 2,000 protesters who were trying to charge to U.S. consulate. They wanted U.S. "to listen to their voices".