"My [next] reason moves to an even deeper level of awareness, for it grows out of my experience in the ghettoes of the North over the last three years—especially the last three summers. As I have walked among the desperate, rejected, and angry young men, I have told them that Molotov cocktails1 and rifles would not solve their problems. I have tried to offer them my deepest compassion while maintaining my conviction that social change comes most meaningfully through nonviolent action."

primarily to...

a
appeal to the audiences emotion
b
build credibility
c
Make a logical argument