Entering this year’s Winter Olympics, many observers wondered if NBC would address the geopolitical and humans rights issues involving host country China. NBC, which is owned by Philadelphia-based Comcast, is facing criticism from groups harmed by China’s policies, with issues ranging from what the U.S. government has dubbed a genocide in the western Xinjiang region to freedom and territoriality in Taiwan and Hong Kong. Mike Tirico, who is hosting his third Olympics for NBC, addressed the subject at the beginning of the network’s prime time broadcast Thursday night. His remarks aired live from…