What issue came between Lyndon Johnson and Martin Luther King Jr.?

The primary issue that arose between Lyndon Johnson and Martin Luther King Jr. was the Vietnam War. While King was increasingly vocal about his opposition to the war, believing it diverted resources from domestic civil rights initiatives and disproportionately affected African Americans, Johnson remained committed to the conflict. This divergence created tension, as King felt that Johnson's administration was not prioritizing the urgent needs of the Civil Rights Movement in light of the war's demands. Their relationship became strained as King sought to address social justice while Johnson focused on foreign policy.