33. Nelson Mandela
Nelson Mandela‘s life and achievements were dramatized in the book and film Long Walk to Freedom. He was a lifelong activist for black rights in South Africa, though the violent activities that he endorsed as a young man led to him being imprisoned for nearly three decades. When he emerged from prison, he was a changed man who espoused nonviolence as a means of ensuring equal rights for blacks. He became the first black president of South Africa.
Read More: Powerful Facts About Worldwide Peacemaker Nelson Mandela.