Muhammad Ali draws a crowd as he playfully spars with an unidentified man in the parking lot of a grocery store in Miami Beach in 1971. (John Shearer—Time & Life Pictures/Getty Images)

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Muhammad Ali draws a crowd as he playfully spars with an unidentified man in the parking lot of a grocery store in Miami Beach in 1971. (John Shearer—Time & Life Pictures/Getty Images)

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Fri, Mar 8, 2013 2:00 AM EST