Many of those demonstrating for noble causes are discourteous, vilify their opponents, and are often filled with hate. In practical terms, if you do not have the spirit of nonviolence, you create a strategic vulnerability: not only will you be equated with people you oppose, you will not appeal to the best in others, and the number of people from whom you can draw support will decline.
–Keshavan Nair, A Higher Standard of Leadership: Lessons from The Life of Gandhi