That's an apt description of Dr. T.R.M. Howard, a civil rights pioneer in Mississippi and later Chicago. My friend (and University of Alabama history professor) David Beito and his wife Linda have written what promises to be a very interesting biography of Dr. Howard. Howard was a fascinating character who, among other achievements, played a very important role in trying to bring the murderers of Emitt Till to justice. I'll have more to say once I've had a chance to finish the book, but for now you can find interviews with David about the book here and here.
The Most Important Civil Rights Leader You've Never Heard Of: