A trove of private government documents offers an unprecedented look inside China’s highly organized crackdown on Uighur Muslims — revealing Beijing’s systematic detention of as many as one million people in camps and prisons over the past three years. In one speech, China’s president ordered his subordinates to show prisoners in Xinjiang “absolutely no mercy.” Guest: Paul Mozur, a technology reporter for The New York Times based in Shanghai. For more information on today’s episode, visit nytimes.com/thedaily.

Background reading:

• In one of the biggest leaks of the last half-century, The Times obtained more than 400 pages of internal documents revealing the meticulous planning that has gone into the Chinese government’s crackdown on ethnic minorities.
• Yesterday we followed our correspondent into the heart of Xinjiang, where one woman risked her life to talk about her experience in China’s system of torture and surveillance.