Junot Díaz's advocacy work draws from his personal experiences as a Dominican immigrant facing the realities of racism and systemic inequality. Witnessing disparities in education and healthcare, he channels these experiences into his writing and activism, focusing on issues like immigration reform and social justice. His novel The Brief Wondrous Life of Oscar Wao addresses the immigrant narrative, while his essays highlight the need for cultural representation and community engagement. Díaz emphasizes the importance of storytelling as a means of amplifying marginalized voices and advocating for change, making his work relevant and impactful.