Nazi official Adolf Eichmann of Germany as head of the Jewish section from 1939 to 1945 of the Gestapo chiefly responsibly murdered millions of Jews during World War II and after the war fled to South America; the Israeli secret service in 1960 captured him, whom people tried and executed.
https://en.wikipedia.org/wiki/Adolf_E...
“I will leap into my grave laughing because the feeling that I have five million human beings on my conscience is for me a source of extraordinary satisfaction.”
“To sum it all up, I must say that I regret nothing.”
“Now that I look back, I realize that a life predicated on being obedient and taking orders is a very comfortable life indeed. Living in such a way reduces to a minimum one's need to think.”
“I am a victum of an error of judgement”