how is the novel a novel depicting anger?

Racism is an overriding theme with McCall spending the majority of his life seeking a way to fit in to the "mainstream" in which whites hold most of the supervisory positions. Racism leads to anger. McCall begins dealing with the racism as a child and it's made clear when a girl in his neighborhood is killed during a drive-by shooting. As McCall ages and shows scholastic potential, he's enrolled in a traditionally white junior high with the idea that he can get a better education. Instead, he's tormented by the whites until his mother realizes the extent of the torture and puts him in a predominantly black school.