BEIJING (Reuters) - Police shot dead four "rioters" in China's far west on Sunday after at least three people, including a policeman, were killed in the latest in a series attacks in the region this month, the state-run news agency Xinhua reported. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=mDz8EGjF-Z0:D_Z2C19iYBA:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=mDz8EGjF-Z0:D_Z2C19iYBA:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/mDz8EGjF-Z0)