The Latest: Stevie Wonder releases 'Dream Still Lives' video

People take part in a march commemorating the anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
People hold signs resembling the signs carried by striking sanitation workers in 1968 as they join in events commemorating the 50th anniversary of the assassination of the Rev. Martin Luther King Jr. on Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
A security guards stands by the grave of the Rev. Martin Luther King Jr., on the 50th anniversary of his assassination in Atlanta, Wednesday, April 4, 2018. (AP Photo/David Goldman)
Martin Luther King III hugs his sister, the Rev. Bernice King, after she spoke at the Mason Temple of the Church of God in Christ in Memphis, Tenn., Tuesday, April 3, 2018. The church is where their father, the Rev. Martin Luther King Jr., delivered his final speech on April 3, 1968, the night before he was assassinated. (AP Photo/Mark Humphrey)
The grave of the Rev. Martin Luther King Jr., stands amidst a reflecting pool at dawn on the 50th anniversary of his assassination in Atlanta, Wednesday, April 4, 2018. (AP Photo/David Goldman)
A flag bearing the image of the Rev. Martin Luther King Jr., waves in the wind at his gravesite on the 50th anniversary of his assassination in Atlanta, Wednesday, April 4, 2018. (AP Photo/David Goldman)
Rapper and actor Common performs at a rally commemorating the 50th anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
Sen. Bernie Sanders, I-Vt., takes part in a march commemorating the 50th anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
A crowd watches a ceremony at the National Civil Rights Museum commemorating the anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated on the balcony of the building, formerly the Lorraine Motel, April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
Rapper and actor Common performs at a rally commemorating the 50th anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
Martin Luther King III, right, and Rev. Al Sharpton, second from right, join in a march commemorating the anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. Martin Luther King Jr. was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)

The Latest: Stevie Wonder releases 'Dream Still Lives' video

People take part in a march commemorating the anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
People hold signs resembling the signs carried by striking sanitation workers in 1968 as they join in events commemorating the 50th anniversary of the assassination of the Rev. Martin Luther King Jr. on Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
A security guards stands by the grave of the Rev. Martin Luther King Jr., on the 50th anniversary of his assassination in Atlanta, Wednesday, April 4, 2018. (AP Photo/David Goldman)
Martin Luther King III hugs his sister, the Rev. Bernice King, after she spoke at the Mason Temple of the Church of God in Christ in Memphis, Tenn., Tuesday, April 3, 2018. The church is where their father, the Rev. Martin Luther King Jr., delivered his final speech on April 3, 1968, the night before he was assassinated. (AP Photo/Mark Humphrey)
The grave of the Rev. Martin Luther King Jr., stands amidst a reflecting pool at dawn on the 50th anniversary of his assassination in Atlanta, Wednesday, April 4, 2018. (AP Photo/David Goldman)
A flag bearing the image of the Rev. Martin Luther King Jr., waves in the wind at his gravesite on the 50th anniversary of his assassination in Atlanta, Wednesday, April 4, 2018. (AP Photo/David Goldman)
Rapper and actor Common performs at a rally commemorating the 50th anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
Sen. Bernie Sanders, I-Vt., takes part in a march commemorating the 50th anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
A crowd watches a ceremony at the National Civil Rights Museum commemorating the anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated on the balcony of the building, formerly the Lorraine Motel, April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
Rapper and actor Common performs at a rally commemorating the 50th anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. King was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)
Martin Luther King III, right, and Rev. Al Sharpton, second from right, join in a march commemorating the anniversary of the assassination of Rev. Martin Luther King Jr. Wednesday, April 4, 2018, in Memphis, Tenn. Martin Luther King Jr. was assassinated April 4, 1968, while in Memphis supporting striking sanitation workers. (AP Photo/Mark Humphrey)