The riots in Henan have highlighted the growing problem of China's minorities. Today the SCMP reports hundreds of security officials closed down a rock concert at a university in the Inner Mongolia Autonomous Region because they feared protests against plans to develop the grave of Genghis Khan. Once the 2,000 students had been dispersed the security officials locked down all the local schools and imposed a curfew. There are more details of the clampdown and the protest at the South Mongolian Human Rights Center.