Excerpted from Unforgivable Blackness: The Rise and Fall of Jack Johnson by Geoffrey Ward

Johnson was back in Chicago in the summer of 1934, appearing in Dave Barry’s Garden of Champions, a sort of sideshow at the Century of Progress International Exposition organized by a veteran referee to compete with such attractions as the Midget Village, Sally Rand’s Balloon Dance, and the Aunt Jemima Cabin. For a dollar, children could throw punches at Jack Johnson while he ducked and laughed and popped his eyes. One evening, he fought an exhibition there against Tom Sharkey, whose sparring partner he had briefly been back in 1901. It was supposed to be a nonviolent sparring session,