A woman holds a poster of Martin Luther King Jr. on the 50th anniversary of his assassination April 4, 2018 in Memphis, Tennessee. (Photo: BRENDAN SMIALOWSKI/AFP/Getty Images)
Silent Prayer Walk And Rally Marks 50th Anniversary Of Martin Luther King Jr.'s Assassination
The Rev. Dr. Leslie Copeland Tune addresses faith leaders as they prepare for a silent march from the Dr. Martin Luther King Jr. Memorial to the National Mall to mark the 50th anniversary of King's assassination April 4, 2018 in Washington, DC. (Photo by Chip Somodevilla/Getty Images)
Memphis Marks 50th Anniversary Of Martin Luther King Jr's Assassination
Children from Promise Academy Spring Hill hold 'I Am A Man' signs, in reference to the sanitation workers strike in 1968, as they participate in an event to mark the 50th anniversary of Dr. Martin Luther King Jr.'s assassination April 4, 2018 in Memphis, Tennessee. (Photo by Joe Raedle/Getty Images)
50th Anniversary Of MLK Assassination
People commemorating the 50th anniversary of the assassination of Rev. Martin Luther King, Jr., gather on the National Mall following a silent prayer walk from the Martin Luther King Jr. Memorial in Washington, DC, April 4, 2018. (Photo: SAUL LOEB/AFP/Getty Images)
50th Anniversary Of MLK Assassination
People commemorating the 50th anniversary of the assassination of Rev. Martin Luther King, Jr., gather at the Martin Luther King Jr. Memorial prior to holding a silent prayer walk to the National Mall in Washington, DC, April 4, 2018. (Photo: SAUL LOEB/AFP/Getty Images)
Silent Prayer Walk And Rally Marks 50th Anniversary Of Martin Luther King Jr.'s Assassination
Members of Definition of Percussion Entertainment (D.O.P.E.) lead marchers from the Dr. Martin Luther King Jr. Memorial to the National Mall to mark the 50th anniversary of King's assassination April 4, 2018 in Washington, DC. (Photo by Chip Somodevilla/Getty Images)
Silent Prayer Walk And Rally Marks 50th Anniversary Of Martin Luther King Jr.'s Assassination
Regina Barksdale (L) and Debra Payne of Kansas City, Missouri, sing "This Little Light of Mine" with thousands of others on the National Mall during a prayer rally to mark the 50th anniversary of Dr. Martin Luther King Jr.'s assassination April 4, 2018 in Washington, DC. (Photo by Chip Somodevilla/Getty Images)
50th Anniversary Of MLK Assassination
People commemorating the 50th anniversary of the assassination of Rev. Martin Luther King, Jr., hold a silent prayer walk from the Martin Luther King Jr. Memorial to the National Mall in Washington, DC, April 4, 2018. (Photo: SAUL LOEB/AFP/Getty Images)
Memphis Marks 50th Anniversary Of Martin Luther King Jr's Assassination
People hold 'I Am A Man' signs, in reference to the sanitation workers strike in 1968, as they participate in an event to mark the 50th anniversary of Dr. Martin Luther King Jr.'s assassination April 4, 2018 in Memphis, Tennessee. (Photo by Joe Raedle/Getty Images)
50th Anniversary Of MLK Assassination
People commemorating the 50th anniversary of the assassination of Rev. Martin Luther King, Jr., gather at the Martin Luther King Jr. Memorial prior to holding a silent prayer walk to the National Mall in Washington, DC, April 4, 2018. (Photo: SAUL LOEB/AFP/Getty Images)
Silent Prayer Walk And Rally Marks 50th Anniversary Of Martin Luther King Jr.'s Assassination
Thousands gather on the National Mall for a prayer rally to mark the 50th anniversary of Dr. Martin Luther King Jr.'s assassination April 4, 2018 in Washington, DC. (Photo by Chip Somodevilla/Getty Images)
Memphis Marks 50th Anniversary Of Martin Luther King Jr's Assassination
Paul Brooks stands near a picture of Martin Luther King, Jr. as he participates during an event to mark the 50th anniversary of Dr. Martin Luther King Jr.'s assassination April 4, 2018 in Memphis, Tennessee. (Photo by Joe Raedle/Getty Images)
Silent Prayer Walk And Rally Marks 50th Anniversary Of Martin Luther King Jr.'s Assassination
Thousands gather on the National Mall for a prayer rally to mark the 50th anniversary of Dr. Martin Luther King Jr.'s assassination April 4, 2018 in Washington, DC. (Photo by Chip Somodevilla/Getty Images)
Silent Prayer Walk And Rally Marks 50th Anniversary Of Martin Luther King Jr.'s Assassination
Thousands gather and sing "This Little Light of Mine" on the National Mall during a prayer rally to mark the 50th anniversary of Dr. Martin Luther King Jr.'s assassination April 4, 2018 in Washington, DC. (Photo by Chip Somodevilla/Getty Images)
50th Anniversary Of MLK Assassination
The Martin Luther King Jr. Memorial is seen on the 50th anniversary of the assassination of Rev. Martin Luther King, Jr., in Washington, DC, April 4, 2018. (Photo: SAUL LOEB/AFP/Getty Images)
