It’s looking like a bad day for the communist bullies of Beijing. Despite the best efforts of the Chinese dictatorship, the people of Hong Kong remain free. And even on the Chinese mainland some brave souls are asserting their basic liberties.

A new report helps explain why Hong Kong protesters are so courageous in demanding that the Chinese government keep its promise to allow citizens of the former British colony to enjoy the rights they have long enjoyed. Hong Kongers have more to lose from oppressive government than...