I always thought Martin Luther King rather good on this subject. And I feel his words and spirit are still very much the words and spirit of our times. Here's an article that highlights this:
http://wagingnonviolence.org/2011/08...cy/#more-11423
You can protest violently or non-violently. Either way you can end up in prison. There's less media coverage of the non-violent kind of protest, but perhaps if the media gave more space to the non-violent kind, there would be less of the violent kind.
I heard Jesse Jackson in St. James Church in London, in 1985 it must have been, as the anti-apartheid wave was at its height. It was very moving. "They have cast a shadow on darkness", he said. Several times.
Duncan