Under what circumstances is it permissable for Christians to use force. I am not talking about military force unless it relates to individuals. I am talking about civilians using force, particularly violent force. Can it ever be defended morally?
Violent force can be used in self-defense or in the defense of the innnocent–so long as it is in proportion to that from which one is being attacked–and this only if it is necessary.
Fr. Vincent Serpa, O.P.