“Tiananmen,” whispers Chai Ling. “What?” I ask, comprehending without comprehension. “I’d like to see Tiananmen, one last time.” We skip the turn to the train station—she and Wang Li had been talking about catching the first train out of Beijing– and instead continue east on Chang’an. As the car approaches the familiar student-controlled zone around Tiananmen Square, I try to make sense of what we are doing. I had just delivered to the international media a candid interview with a wanted student leader who said she is going to run away, while speaking forthrightly about imminent bloodshed and the desire to overthrow the government; if she was at risk before the interview, she’s at even more risk now. What was the right thing to do? It wasn’...