"In 2014, in a snow-covered house in Flushing, Queens, a village revolutionary from Southern China considered his options. Zhuang Liehong was the son of a fisherman, the former owner of a small tea shop, and the spark that had sent his village into an uproar--pitting residents against a corrupt local government. Under the alias Patriot Number One, he had stoked a series of pro-democracy protests, hoping to change his home for the better. Instead,...