Wang Peiying, a widow with seven children, was a worker at the Ministry of Railways. The famine precipitated by the Great Leap Forward, which killed perhaps 30 million people by the early 1960s, had horrified her, and as political turmoil began again only a few years later, she publicly called on China’s leader, Mao Zedong, to take responsibility for his mistakes and resign. Ms. Wang was sent to a psychiatric hospital and drugged. Released and paraded around the capital, she refused to recant. Instead, she repeated her accusations. Her jaw was broken to stop her from talking. After a mass trial at the Workers’ Stadium on Jan. 27, 1970, she was executed.