Book excerpt: In early 1968 the grisly on-the-job deaths of two African-American sanitation workers in Memphis, Tennessee, prompted an extended strike by that city's segregated force of trash collectors. Workers sought union protection, higher wages, improved safety, and the integration of their work force. Their work stoppage became a part of the larger civil rights movement and drew an impressive array of national movement leaders to Memphis, including, on more than one occasion, Dr. Martin Luther King, Jr. King added his voice to the struggle in what became the final speech of his life. His assassination.