A bit of history from David Chappell., A Stone of Hope: Prophetic Religion and the Death of Jim Crow
In 1965, in Montgomery Alabama he preached to as many as 18,000 people each night. As Chappell notes, despite George Wallace and Jim Crow laws, he refused to segregate his audiences.
There was more than an abstract parallel between the civil right movement and revivalism. In fact, there was a direct relationship between King and the famous revival leader who was his contemporary, Billy Graham. King and his chief of staff, Wyatt Tee Walker, sought advice from Graham and Graham's staff of tactical experts on how to organize large meetings and build publicity. King appeared onstage in one of Graham's 'crusades' in New York City in August 1957. The two men even traveled to Rio de Janiero together to attend the World Baptist Alliance conference in 1960. Graham, whose audiences were not segregated, often preached against racism