After all, it took nothing less than a devastating world war to stop Nazi genocide in 1945. China is an economic and, increasingly, a military superpower that’s resistant to outside leverage, especially when it’s a major trading partner of most developed nations. Coincidentally, this week will mark the 30th anniversary of China’s massacre of political dissidents in and around Tiananmen Square — a horrific event met largely with a collective shrug. In the case of the Uighurs, it’s been appalling that the world’s largest Muslim nations — led, of course, by their own murderous dictators — have made it clear they’d rather do business with Beijing than stand up for people of their own faith.