There have been many threads of coverage and commentary surrounding the March on Washington’s 50th anniversary, and one of them is naturally about nonviolence: the nation’s leadership had assumed that the march would turn violent, but August 28, 1963, turned out to be one of the most notably peaceful days in the history of the District of Columbia. Still, the nonviolent character of the movement that the march defined is being questioned. There has been some interesting historical revisionism surrounding Rosa Parks and other civil rights figures who, unlike Martin Luther King, were less-than devoted to nonviolence as an abiding moral principle. (For my take on that, go here.) And now comes a book that, among other provocations, makes the case that King’s struggle was arguably a violent one. The author is Benjamin Ginsberg, and his forthcoming title is The Value of Violence (Prometheus Books).