In 1863 President Abraham Lincoln issued the Emancipation Proclamation freeing all slaves in the United States. One hundred years after this decree was signed, however, the life of blacks was still "sadly crippled by the manacles of segregation and the chains of discrimination." On August 28, 1963, a quarter of a million people of all races came to Washington, D.C. ，to show their support for freedom and justice for all Americans, and for black people in particular. At that demonstration Martin Luther King, Jr. delivered this famous speech, widely regarded as the most eloquent statement of the black people's dreams and aspirations ever made. Dr. King told the world, "I have a dream" that equality would come "to all of God’s children." He said he wanted everyone to be able to "join hands and sing in the words of the old Negro spiritual, 'Free at last! Free at last!…'