Maybe you've received a flier to see a show at Radio City Music Hall called Chinese New Year Splendor, which is promoted as a holiday celebration of China’s diverse cultural riches. But mixed within the traditional Mongolian dancing, orchestral music and Buddhist parables are dramatizations of the Chinese government’s oppression of Falun Gong, a qigong-based spiritual practice that is banned in China. And the show’s political content is prompting audiences to walk out by......