This article is published with ProPublica, the nonprofit investigative newsroom. BEIJING — Inside the Potemkin village of China’s propaganda, the Winter Olympics have unfolded as an unalloyed success, a celebration of sports and political harmony that has obscured — critics say whitewashed — the country’s flaws and rights abuses. At Beijing 2022, the hills are snowy, not brown as usual this time of year. A Uyghur skier is the symbol of national unity, the tennis player Peng Shuai just a curious spectator. Athletes and foreign journalists praise the polite volunteers and marvel at the high-speed trains and the robots that...