him his life and nearly cost a congressman hers. nbc s steve handlelsman reports on how the nation haonored his legacy yesterday. reporter: at ebenezer baptist church in atlanta, a celebration of dr. martin luther king. this man of peace reporter: and a focus on his message. and taught to us reconcile and not to divide. taught to us love and not to hate. reporter: teachings felt by many, especially timely, after the attempted assassination of congresswoman gabby giffords. today we are all a citizen of tucson. i have a dream. reporter: 47 years after the civil rights leader s most famous speech free at last. reporter: near the lincoln memorial, the new memorial to dr. king is nearing completion. kyle london brought her son, trey, to the site. i m thinking about history and how important dr. martin