Background of MLK Jr.
Martin Luther King, Jr. was born on 15 January 1929. He was the second of three children and first named Micheal. Both his father and himself changed their name to Martin later. As a child, King's encounters with racial discrimination was mild but effective. His parents encouraged him to notice the racial discrimination and respond to them. I would guess this support from his family helped him get the strenght/bravery to help stop discrimination.
From what I understand from the book "Outliers," by Malcom Gladwell, An outlier is someone outside of the normal. MLK was obviously raised with concerted cultivation which helped him. Because of this he did not conform to society and acted to help the African American across the country. He went out and publicly spoke on behalf of the discriminated blacks in U.S. I'm sure all of you know about the I Have A Dream Speech. As a result, Martin Luther King Jr. was an outlier.