The greatest human evils are not those that individuals perform in private, the tiny transgressions against some arbitrary social standard we call sins. The ultimate evils are the mass murders that occur in revolution and war, the large-scale savageries that arise when one agglomeration of humans tries to dominate another: the deeds of the social group.... only group efforts can save us from the sporadic insanities of the group.

The Clint Eastwood Conundrum - The Lucifer Principle: A Scientific Expedition Into the Forces of History (1997)