There aren't just bad people that commit genocide we are all capable of it. It's our evolutionary history.

Whatever can be noted historically can be found within history.

History, sociology, economics, psychology et al. confirmed Joyce's view of Everyman as victim.

Horror is the natural reaction to the last 5,000 years of history.

If you take a look at history, you will find that the understanding of what is good and evil has always existed before the individual religions. The religions were only invented by people afterwards, in order to express this idea.