According to a report by "The Economist", the Cultural Revolution in China began on 1966 May 16. There was extreme violence by Chinese against Chinese. In Wuhan, a teenager bragged that he killed 5 children in rival factions of the Red Guards. In Daxing, a group of such guards buried an old woman and her granddaughter alive. In Guangxi, the Chinese ate their victims.
Why did the Chinese commit such atrocities?
The answer lies in Chinese culture, which has an ugly, savage dimension. Consider a Chinese who is living well. He has relatively much wealth, good health, and good prospects for the future. If his neighbor is brutalized and ultimately killed, then the Chinese thinks, "His suffering is none of my business. I am doing fine. My status is the only thing that matters."
This barbaric indifference in Chinese culture explains the Cultural Revolution and, moreover, is the reason that human rights and democracy do not gain traction in China.
Furthermore, according to another report by "The Economist", Harry Wu (also known as Wu Hongda) suffered brutally during the Cultural Revolution. Beijing imprisoned him in the gulag for about 19 years. He became so malnourished that, one day, "he found a tangle of hibernating snakes, pulled them out, bit off their heads, skinned them and boiled them up for that wonderful, near-forgotten taste of meat." After his release from prison, he waged a campaign of highlighting human-rights abuses in China. Most Chinese (including Chinese living in the West) ignored him.
You can verify this callous indifference (in Chinese culture) by merely attending a meeting of your local chapter of Amnesty International (AI) at a nearby university. Although the percentage of ethnic Chinese in the college of engineering exceeds 50%, the percentage in the meeting of AI is close to 0%.
Meetings of AI typically have attendees with a variety of ethnicities, but ethnic Chinese are rare.
Chinese morality savagely assaults Western notions of human decency.