He not only told me about it, but he acted out the part of a white player charging into me, blaming me for the "accident" and calling me all kinds of foul racial names. He talked about my race, my parents, in language that was almost unendurable. "They'll taunt and goad you," Mr. Rickey said. "They'll do anything to make you react. They'll try to provoke a race riot in the ballpark. This is the way to prove to the public that a Negro should not be allowed in the major league. This is the way to frighten the fans and make them afraid to attend the games."

What is the author’s purpose for including these paragraphs?

to inform readers about the history of race riots at American ballparks
to inform readers about the challenges Rickey and Robinson expect to face
to persuade readers that all races should be treated equally in American sports
to entertain readers with a story about a fight between Ricky and Robinson