Mother Dear, one day I'm going to turn this world upside down. Long before he became a world-famous dreamer, Martin Luther King Jr. was a little boy who played jokes and practiced the pia and made friends without considering race. But growing up in the segregated south of the 1930s taught young Martin a bitter lesson -- little white children and little black children were t to play with one ather. Martin decided then and there that something had to be done. And so he began the journey that would change the course of American history.