Louisville Flood Victims, 1937During the Great Depression, Louisville, Kentucky, was hit by the worst flood in its history. The famous documentary photographer Margaret Bourke-White captured this image of African American flood victims lining up for food. Not only does the billboard message mock the Depression-era conditions, but the smiling white family appears to be driving its car through the line of people, drawing attention to America’s race and class differences. (Margaret Bourke-White/Time-Life Pictures/Getty Images)