The natural evolution of violence

Not long ago in the history of the world, routine daily violence, excluding the ravages of nations at war, has been largely personal in nature. Grudges, slights to honour, adultery, and disputes over money, are what triggered the murderous impulse.

In the modern world, more in the post-modern, much violence has become impersonal.

Terrorists, street gangs, lone sociopaths, sociopaths in groups and pledged to a utopian vision all kill people they do not know, against whom they had no realistic complaint, for the purpose of attracting attention, making a statement, intimidation, or even just for the thrill of it.