it's been a long, long, long time coming

"The song was inspired by various personal events in Cooke's life, most prominently an event in which he and his entourage were turned away from a whites-only motel in Louisiana. Cooke felt compelled to write a song that spoke to his struggle and of those around him, and that pertained to the Civil Rights Movement and African Americans. The song contains the refrain, "It's been a long time coming, but I know a change is gonna come." (wiki)