Police shot and killed two ethnic Uyghurs and wounded another in a Chinese region that has seen violent ethnic strife in recent weeks, state media reported Monday. The police were trying to stop the three people from attacking a fourth person with clubs and knives in Urumqi, Xinjiang, China Radio International reported, citing the local government. All four people involved in the incident were ethnic Uyghurs, a minority Muslim group distinct from China’s majority Han population, CRI said.