Younger organizations, like Color of Change have picked up the mantle, pushing for justice, freedom and equality around the nation.
Reed said the efforts of Black Lives Matter today share more in common with the Black Power movement than King's end-of-life aims. He delivered this speech the night before he was assassinated.
"On this cherished day, we honour the memory of Rev. King and we rededicate ourselves to a glorious future where every American from every walk of life can live free from fear, liberated from hatred and uplifted by boundless love for their fellow citizens", the president added.
Prior to King's assassination that triggered both grief and days of riots in more than 100 cities, the reverend had traveled to Memphis to support sanitation workers in the southern state striking for better working conditions and higher pay.
There were echoes in that mass mobilization of King's historic "March for Jobs and Freedom" held in the U.S. capital city on August 1963, which drew 200,000 people, a gathering that galvanized the forces of the antiracism effort and underscored not just its muscle, but its moral authority.
Andre Gipson, the local president for the International Association of Machinists and Aerospace Workers, says about 400 members from other cities are in Memphis for the march.
Trump's comments came in a White House proclamation issued Wednesday on the 50th anniversary of King's slaying in Memphis, Tennessee.
"It's always a source of pain and anxiety", Jackson said. "I'm watching him being lifted up and being thrown back", Ester recalled Wednesday, 50 years to the day after King was killed. "But, I'm not concerned about that now..." He refused to be afraid because of the risk of ambush and sabotage.
Dr. Wornie Reed, the Director of the Race and Social Policy Research Center within the College of Liberal Arts and Human Sciences at Virginia Tech University who met King during the Montgomery Bus Boycott and joined him on the historic 1963 March on Washington, said in a news release that there remain many myths about King. So even though it's been 50 years, it doesn't seem like it.
"We put on our marching shoes", Lewis said during the "I am 2018" launch.
She said the diverse nature of the crowd gives her hope that "there may be some coming together of our country, our people, our nation".
"I just could not believe that anyone could shoot such a person like a deer in the woods", said Bob Zellner, a civil rights organizer who counted King among his mentors.
"Dr. King was 26 during the bus boycotts, (civil rights pioneer and now United States representative) John Lewis was 23 during the Freedom Rides".
Bernice King, also a minister, led off her sermon with a darker view, saying her father - on the morning of his murder - called his mother with the title of the sermon he planned to preach the following Sunday: "America is going to hell".