^^^^^ CB: Followers of ML King did not respond with violence to violent police attacks. In general, it is considered that the Civil Rights Movement won its struggle with the segregationists with these tactics.
Similarly, Ghandi had a significant impact in forwarding the Indian national liberation movement. So, responding to violence by invoking 'non-violence' is not absurd. OWS gained a lot of sympathy and support with non-violent response to the police violence against them early on.