What conflict does black dog cause in this section dragonwings?

In "Dragonwings" by Laurence Yep, the character Black Dog represents a source of tension and conflict, particularly in his interactions with the protagonist, Moon Shadow. His aggressive and antagonistic behavior creates fear and distrust within the Chinese immigrant community, exacerbating the existing racial tensions. Black Dog's actions challenge Moon Shadow's understanding of loyalty, friendship, and the complexities of navigating life in a hostile environment, ultimately pushing him to confront his own values and the prejudices of those around him.