The history of the 20th century has been marked by the
appearance of totalitarian ideologies and regimes.
Communism, Fascism, and Nazism have brought
immeasurable suffering and countless victims,
even in the parts of the word not subjected to their rule.
All those ideologies thrived on hate, but also caused
its growth. And hate was followed by violence.
https://memoryandconscience.eu/centuryofmartyrs/index.html
(dostęp z 28.12.2022)