Martin Luther King Jr.

Martin Luther King Jr. was a great promoter of diversity. When one is a great advocate for something they can sometimes be caught fighting against the opposite. For example, a woman can fight for women's rights so passionately that she can unknowingly become sexist toward men, thinking that women are better than men, when really she should be promoting equality between the two genders. Dr. King did not fall prey to this. He fought for the end of racial discrimination toward African-Americans, but never once hated Caucasians. In fact, he was a great promoter of diverse communities as you can see from these passages of his I Have a Dream Speech:

I have a dream that one day on the red hills of Georgia, the sons of former slaves and the sons of former slave owners will be able to sit down together at the table of brotherhood.

I have a dream that one day, down in Alabama, with its vicious racists, with its governor having his lips dripping with the words of "interposition" and "nullification" -- one day right there in Alabama little black boys and black girls will be able to join hands with little white boys and white girls as sisters and brothers.

And...when we allow freedom ring, when we let it ring from every village and every hamlet, from every state and every city, we will be able to speed up that day when all of God's children, black men and white men, Jews and Gentiles, Protestants and Catholics, will be able to join hands and sing.