What does the use of graffiti symbolize in the novel, The City We Became?

Graffiti symbolizes the voices of the oppressed. In the prologue the primary uses graffiti as a way to communicate his emotions and internal thoughts. When the Bronx Art Center showcase his work, later on in the novel, it is a physical manifestation of their commitment to uplifting the voices of the community. The Woman in White wants Unknown's work removed as part of her campaign to suppress nonwhite narratives and voices and assert Arian power.