My comment:
(a) The article is long but does not seem to say much. You may not want to read it.
(b) "I decided to focus on covering the Vietnam War and to give up trying to cover the CR, as we called it, from Hong Kong."
I fail to find put what CR stands for.
(c) "One of my first trips out of Beijing was to Daxing County * * * Fairly early in the Cultural Revolution, from Aug 27 until Sept 1, 1966, these militants, including local militiamen and Party activists, killed 325 people in the county, according to scholars Wang Nianyi 王年一, Yang [sic] Jiaqi 严家其 and Song Yongyi 宋永毅 * * * One of my sources was a former police officer who told me that under orders from Public Security Minister Xie Fuzhi 谢富治"
北京市 大兴区 https://zh.wikipedia.org/wiki/大兴区
("明朝、清朝在北京(顺天府)设置大兴县，为附廓的两赤县之一。1928年划归河北省 * * * 1958年划入北京市，北京市南苑区的旧宫、亦庄、瀛海、西红门等地划归大兴，改称大兴区。1960年改名大兴县。2001年5月1日大兴县撤县设区恢复大兴区")
(d) "As Ian Johnson noted in late 2014 in The New York Review of Books, a brave underground magazine titled Remembrance 记忆 has published roundtable discussions of the Cultural Revolution and apologies issued by several perpetrators of the terror and violence."