Actually, John Arthur "Jack" Johnson did not have to do any fanning.
Racism, aka Jim Crow, was in full flame during his tenure as HW champ, and continues to this day.
Johnson flaunted his ability to attract White women, knocked out Jeffries in 1910, setting off race riots across the USA.
William Waring Cuney, a Harlem Renaissance poet, paid tribute to the fight in his poem, My Lord, What a Morning.
I remember old-timers referring to this and the Joe Louis/Max Schmeling fight of 1938 as if it had just recently happened.
As I learned at Uni, HISTORY is an unsparing discipline.