The months of protests in Hong Kong may be the biggest political crisis facing Chinese leadership since the Tiananmen Square massacre a generation ago. What began as objections to a proposed extradition law has morphed into a broad-based protest movement. “There was just this rising panic that Hong Kong was becoming just like another mainland city, utterly under the thumb of the Party,” says Jiayang Fan, who recently returned from Hong Kong. In Beijing, Evan Osnos spoke to officials during their celebration of the Chinese Communist Party’s seventieth year in power. He found that the leadership is feeling more secure than it did in 1989, when tanks mowed down student protesters. “I think the more likely scenario,” Osnos tells David Remnick, “is that China will keep up the pressure and gradually use its sheer weight and persistence to try to grind down the resistance of protestors.” And, from the archives, reflections from Richard Nixon on the fallout from Tiananmen Square.