Brave's LEO AI came up with a fairly decent summary:
The Black Book of Communism is a critical examination of communism's impact on society, highlighting its atrocities and human rights abuses. It documents the lives lost, oppression, and suffering experienced under communist regimes, with a focus on the Soviet Union, China, and Eastern Europe. The book provides a comprehensive and balanced perspective on the history of communism.
Start with this:
The Black Book of Communism: Crimes, Terror, Repression, written by a group of European (and mostly Marxist) scholars.
https://www.bing.com/search?q=The+black+book+of+communism
Brave's LEO AI came up with a fairly decent summary: