I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.

from Martin Luther King, Jr – I Have A Dream on Rap Genius

Meaning

MLK has 4 children, Yolanda, Dexter, Martin, and Bernice.
He hopes that America can mature socially enough for the deciding factor in his kids' lives to be their character, not the fact that they are African-American.

To help improve the meaning of these lyrics, visit “I Have A Dream” by Martin Luther King, Jr and leave a comment on the lyrics box