Robo, the problem with your reassuringly rosy picture is that while many groups are enjoying a cultural shift away from violence, violence perpetrated against some groups amounts to genocide in slow motion. This is because the violence is disproportionate to those groups' population numbers.

So when people comfort themselves that, overall, human society is getting 'more civilized', it's easy to remain in denial about the violence directly causing the disappearing populations. And fail to change our own unintentional complicity with the violence involved.

~S~