Chinese cyclist hit, riot ensues.

http://www.autoblog.com/2008/01/09/minor-bump-between-a-car-and-a-cyclist-in-china-turns-into-a-rio/

Doug found a link with a better description and more pics. It was quite the crowd.

http://www.chinacartimes.com/2008/01/02/traffic-dispute-at-nankai-university-turns-nasty/