I believe that the basic nature of human beings is gentle and compassionate. It is therefore in our own interest to encourage that nature, to make it live within us, to leave room for it to develop. If on the contrary we use violence, it is as if we voluntarily obstruct the positive side of human nature and prevent its evolution.
Trauma happens in relationships, so it can only be healed in relationships. Art can't provide healing. It can be cathartic and therapeutic but a relationship is a three-part journey.