It may seem counter intuitive but violence and punishment have proven historically to be ineffective. After thousands of years of human history mankind has not on a large scale evolved to a level of peace and prosperity. Just expressing the Christian ideal of loving thy neighbor is rarely accomplished these days. So employing the technique of non-violent communication, a method where the needs of the human heart are met with satisfaction and communications are opened with empathy.
You can learn more about non-violent communication in this workshop by Marshall Rosenburg.