what does the song glory by common and john legend mean

"Glory" by Common and John Legend serves as the theme song for the movie "Selma," which is based on the 1965 Selma to Montgomery voting rights marches led by civil rights activists such as Martin Luther King Jr. The song celebrates the courage and unity of those who fought for civil rights and equality during that time. It also reflects on the progress that has been made, as well as the ongoing struggle for justice and equal rights in the present day. Overall, "Glory" is a powerful anthem that highlights the importance of standing up against injustice and working towards a brighter future for all.