In the 20th century, few names, especially of Black people, ring louder than that of Martin Luther King. His life, his dedication to the civil rights movement and his martyrdom in April 1968 made him a global icon of social justice. Born in 1929, if he were not martyred, he would be enjoying his 90th year of life. But he was martyred and, too, he was considered an enemy of the state. Why?