"Kill them all, for the Lord know which are his own." – Spoken by French Cleric Arnaud Amalric during the Albigensian Crusade (a genocide waged against French Non-Catholics in the 13th Century). Saloth Sar was born a subject of the French Empire and had a French education, it is quite possible he learned about Amalric in his classes.

Pol Pot went on to kill roughly 1/3 of the population of Cambodia.