The Smithsonian Channel Presents: MLK: THE ASSASSINATION TAPES - Jesse Jackson and Martin Luther King Jr. after being shot on April 4, 1968, on the balcony of the Lorraine Hotel in Memphis, Tennessee - Photo: Joseph Louw/Courtesy of Smithsonian Channel/Getty Images - Photo ID: smithsonian_MLK_LrnHtl

The Smithsonian Channel Presents: MLK: THE ASSASSINATION TAPES - Memphis rally - Photo: Courtesy of Smithsonian Channel/Mississippi Valley Collection-The University of Memphis Libraries - Photo ID: smithsonian_MLK_MphsRly

The Smithsonian Channel Presents: MLK: THE ASSASSINATION TAPES - Jesse Jackson and Martin Luther King Jr. on the day of his "Mountaintop" speech - Photo: Courtesy of Smithsonian Channel/Mississippi Valley Collection-The University of Memphis Libraries - Photo ID: smithsonian_MLK_J Jackson-MntnSpch