Why is the information about the Beale family shocking to Grayson in Maniac Magge?

In "Maniac Magee," the information about the Beale family is shocking to Grayson because it reveals the deep-seated racial tensions and divisions that exist in the town. Grayson, who has formed a bond with Maniac, is confronted with the reality of how systemic racism has affected families like the Beales, highlighting the stark differences in their experiences. This revelation forces Grayson to confront his own biases and the societal issues that separate people, challenging his previously held perceptions about race and community.