Before and during the Olympics, the issue of Tibet was frequently in the news.  In March, an anti-government demonstration in the Tibetan capital, Lhasa, turned into a riot. It catapulted the Himalayan region into the headlines and led to protests that disrupted the Olympic torch relay. In the closing days of the Beijing Olympics, China showcased a new production of an old propaganda opera that presents an image of Sino-Tibetan harmony.  Stephanie Ho reports from Beijing.