Danny Lyon (American, born 1942), Sheriff Jim Clark arrests two SNCC voter registration workers on the steps of the federal building, Selma, Alabama, 1963, printed later, Gelatin silver print, h. 11 in. (27.9 cm); w. 14 in. (35.6 cm), San Antonio Museum of Art, gift of Ernest Pomerantz and Marie Brenner, 2017.25.42, © Danny Lyon / Magnum Photos