How does Mr. Dalton show that his "heart is not bitter" towards Negro people?

Mr. Dalton donates additional funds and gifts to the South Side Boy's Club.

“I want you to know that my heart is not bitter,” Mr. Dalton said. “What this boy has done will not influence my relations with the Negro people. Why, only today I sent a dozen ping-pong tables to the South Side Boys’ Club….”