Religion has always had an aspect of violence to it. A primary focus of Christianity is on an act of ritual torture and killing by crucifixion. In the origins of baptism, the idea was for a person to physically experience the sensation of drowning and then come back to life born anew. The scarring rituals of indigenous tribes recognize while growing up that the cutting of the bonds of childhood, like a chick breaking from the egg, is in part a violent act. Modern day versions of this are body piercing by young people and the stripes on a sergeant's sleeve.
Violence is a part of life and people are attracted to violence.
Too great an attraction is similar to addicted people's attraction to drugs. As pointed out in Carl Jung's famous letter to Bill Wilson, often what is underlying physical obsession is a spiritual longing to cut through to a deeper more meaningful life. Teenage violence may be an attempt to vivify life that seems self-defeating. Any efficacious manner of violence must be contained both by laws and by rituals that redeem and strengthen the preciousness of life. Medicine has for centuries used small amounts of toxic chemicals to cure.