Answer:
The statement refers to Jack Johnson, as he was the African American boxer who became world champion in 1908, angering many white people.
Step-by-step explanation:
Jack Johnson was an American boxer born March 31, 1878 in Galveston, Texas, and dead June 10, 1946 in Raleigh, North Carolina. Nicknamed "the giant of Galveston", he was the first black heavyweight world champion between 1908 and 1915.
Born into extreme poverty to former slave parents, Jack Johnson embarked on boxing to escape his condition. At that time, blacks could compete against white opponents in all categories except heavyweight. Johnson broke this taboo in 1908 and became world champion.