There's rising concern in China about the violent campaign by Uighurs which has spread across the country, manifesting itself mainly in attacks on citizens at railway stations and other public places. The mainly Muslim Uighur people see themselves as closer to Central Asia, and object to mass immigration of Han Chinese into Xinjiang province and the curtailing of their rights. Beijing, on the other hand, says Uighur militants are waging a violent campaign for an independent state through terrorism.