CHICAGO (AP) — The Rev. Jesse L. Jackson, a protege of the Rev. Martin Luther King Jr. and two-time presidential candidate who led the Civil Rights Movement for decades after the revered leader’s assassination, died Tuesday. He was 84.

As a young organizer in Chicago, Jackson was called to meet with King at the Lorraine Motel in Memphis, Tennessee, shortly before King was killed, and he publicly positioned himself thereafter as King’s successor.

Jackson led a lifetime of crusades in the United States and abroad, advocating for the poor and underrepresented on issues from voting rights and job opportunities to education and health care. He scored diplomatic victories with world leaders, and through his Rainbow/PUSH Coalition, he channeled cries for Black pride and self-determination into corporate boardrooms, pressuring executives to make America a more open and equitable society.