The boxer Cassius Clay (later Muhammad Ali) signs autographs for a crowd of fans gathered around him on a busy street in the Harlem neighborhood of New York city, May 1965. (Photo by Robert Abbott Sengstacke/Getty Images)
The boxer Cassius Clay (later Muhammad Ali) signs autographs for a crowd of fans gathered around him on a busy street in the Harlem neighborhood of New York city, May 1965. (Photo by Robert Abbott Sengstacke/Getty Images)