On April 3, 1968, speaking to the Sanitation Workers of Memphis, Tennessee, Martin Luther King, Jr. declared that difficult days lay ahead but said it did not matter to him because he had been to the mountaintop, looked over, and seen the Promised Land, affirming that the people would get there together; he also expressed his dream that the brotherhood of man would become a reality and that all of God's children would join hands and sing, “Free at last! Free at last! Thank God almighty we are free at last.” The next night, he was assassinated. Dedicated on June 15, 2007, the memorial resulted from the efforts of Betty Palmer-Harris and a diverse committee co-chaired by Norbert and Barbara Peiker and Dr. James Harris and Betty Palmer-Harris. Its paved walkway lined by 39 boulders symbolizes the years of King's life, its black granite wall from Zimbabwe is etched with images and quotes reflecting his efforts to secure for every American the right to pursue the American dream, and its bronze bust of a young King was sculptured by Dale Slavin.