violence is a signal to offenders and non offenders. you cant only assess the effect on the direct targets of violence. if i spank my eldest, my youngest behaves better
"No discipline seems pleasant at the time, but painful. Later on, however, it produces a harvest of righteousness and peace for those who have been trained by it."
It's a long-standing trait of adulthood to be able to reflect and integrate the sometimes painful training of childhood as being necessary for producing the mindsets and behaviors of to function in society.