decent, kind soul. part of what makes john humble is that he knows who he is, and he knows that he has sacrificed for greater good, so what else does he have to prove? reporter: although he still carries his scars of the days in the movement, lewis is willing to engage with those who hurt him. one of the klans member who beat us in south carolina came to this office many years later and said, mr. lewis, i ve been a member of the klan. i m one of the people that beat you. but i want to apologize. will you forgive me? his son started crying. he started crying. and i cried with them. it is the power the way of peace, the way of love, the power of the philosophy of nonviolence. [ applause ] thank you, brother. good to see you. he epitomizes what the nonviolent movement s all about. it s about soul force.