Societies that empower women are less violent in every way.
There is a correlation between economic inequality and personal violence. The explanation for the correlation isn't completely clear; there are a number of possibilities.
Violence is the last refuge of the incompetent.
Isn't keeping statistics on violence a form of violence?
Violence is often caused by a surfeit of morality and justice, at least as they are conceived in the minds of the perpetrators.
We really are creatures of a violent world, biologically speaking - watching violence and learning about it is one of our cognitive drives.
As women are empowered, violence can come down, for a number of reasons. By all measures, men are the more violent gender.
Seven blunders of the world that lead to violence: wealth without work, pleasure without conscience, knowledge without character,
commerce without morality, science without humanity, worship without sacrifice, politics without principle.
All of the violence that doesn't occur doesn't get reported on the news.