<p><em>Sanitation workers in Memphis, Tennessee, had been on strike since February 12, 1968, and negotiations with city officials were at a dead end. When Dr. King announced his intention to march with the strikers as part of his new Poor People’s Campaign, thousands rallied to the cause. But the deepening divide in the civil rights movement between supporters of nonviolence and supporters of direct action was about to be exposed in a city with a long history of troubled race relations.</e