Black Americans in the Jim Crow South could not escape the grim reality of racial segregation, whether enforced by law or by custom. In Freedom's Main Line: The Journey of Reconciliation and the Freedom Rides, author Derek Charles Catsam shows that courtrooms, classrooms, and cemeteries were not the only front lines in African Americans' prolonged struggle for basic civil rights. Buses, trains, and other modes of public transportation provided the perfect means for civil rights activists to protest the second-class citizenship of African Americans, bringing the reality of the violence of...