Sense

"Those who claim to know everything and can fix everything eventually come to the conclusion that everyone must be killed."

Albert Camus
(In response to Emmanuel Dastier de la Vigerie, 1948)
If you want to find examples of such people, look at the Soviet Communist Party.

In the early years of the Soviet Union's rise to power, one of the European visitors who had gone to witness the great Volga famine said:
"A woman refused to bury her husband, who had recently died of starvation, because by eating his flesh, she could survive a little longer."

Russia's geography was never unfamiliar with famine, but during the Volga famine, people witnessed things that few had experienced before. World War I, low rainfall, the civil war, and the iron fist of the communists in building their ideal society, regardless of the realities—such as the massacre of the kulaks (wealthy farmers or landowners, with even those owning more than one cow categorized as kulaks), the collectivization of land, and the communists' seizure of food resources for their soldiers fighting in the civil war against the White Army—together led to a great famine, which ranks among the most horrific disasters of the 20th century.

How terrifying and shocking it was; from now on, whenever I hear the Volga Boatmen's Song, I'll remember all this suffering and these atrocities 😢