A stained glass rosette and twisted metal from the 1963 bombing of the Sixteenth Street Baptist Church in Birmingham, Ala. The memento was donated to the Smithsonian’s National Museum of African American History and Culture by the family of a white Baptist minister on September 9, 2013. RNS photo by Adelle M. Banks

A stained glass rosette and twisted metal from the 1963 bombing of the Sixteenth Street Baptist Church in Birmingham, Ala. The memento was donated to the Smithsonian’s National Museum of African American History and Culture by the family of a white Baptist minister on September 9, 2013. RNS photo by Adelle M. Banks