We have to accept what we are – emotional creatures equally attracted to violence and peace. And in some situations violence was predominant – for example The Winning of the West involved the complete destruction (killing) of the American Indians – and the herds of Buffalo they lived on.
America has invaded every country in Central America, except Costa Rica – and supported governments, such as in Guatemala – that practiced genocide.
And continues to purchase drugs, in large quantities – that fuels much violence also. This is violence by the drug users against themselves – and much more violence – between the drug cartels themselves. Any attempt to legalize this – a sensible alternative, it seems to me – is rejected out-of-hand.
Why this is so, we do not know – but the effect is clear enough – violence everywhere.