” I knew that I could never again raise my voice against the violence of the oppressed in the ghettos without having first spoken clearly to the greatest purveyor of violence in the world today — my own government. For the sake of those boys, for the sake of this government, for the sake of hundreds of thousands trembling under our violence, I cannot be silent,” Dr. Martin Luther King Jr.
This was and still is the harsh truth. At this site, there are other thought provoking quotes from King, mostly in his final years, when he turned radical; unfortunately( but purposely) much of this of this wisdom is anonymous in the mainstream media. http://www.brainyquote.com/quotes/authors/m/martin_luther_king_jr.html

Chris