A few of the zillion sources available on Mao's mass murders and oppression:
Mao Zedong, founder of the People's Republic of China, qualifies as the greatest mass murderer in world history, an expert who had unprecedented access to official Communist Party archives said yesterday.
www.sciencespo.fr
Can you name the greatest mass murderer of the 20th century? No, it wasn’t Hitler or Stalin. It was Mao Zedong. According to the authoritative “Black Book of Communism,” an estimated 65 million Chinese died as a result of Mao’s repeated, merciless attempts to create a new “socialist” China...
https://www.washingtonpost.com/news...ving-historys-greatest-mass-murderer-his-due/
https://www.cato.org/commentary/china-should-spurn-mass-murderer-mao
In these pages nearly seven years ago, Timothy Snyder asked the provocative question: Who killed more, Hitler or Stalin? As useful as that exercise in moral rigor was, some think the question itself might have been slightly off. Instead, it should have included a third tyrant of the 20th...
MAO TSE-TUNG: CHARGES OF 80 MILLION DEAD AMID MURDER, STARVATION AND
MAO AND TERROR