It is greater than that of class struggle, which is the result of impositions upon society. Faced with a child drowning, only those inculcated with the artificial pressures of capitalism will ask what profit he will gain by diving in. This is not the case with the conqueror. The Scottish crofters and the Irish peasants were evicted by fire. The nazi bureaucracy had their murder statistics neatly typed and filled.
Shipowners let their men go to their deaths in leaking ships, until restrained by law from doing so.
The clergy prayed for the souls of the burning heretics. A society based upon mutual aid is natural to man. The society in which it is not practised is the unnatural one. Repressive institutions are imposed upon us. They need to be explained away.