American in the twenty-first century has become increasingly geographically mobile and ethically diverse. Yet, paradoxically, black ghettos-spatially isolated that are predominantly black-remain central features of American metropolitan landscape. The results of the 2010 census indicate that, while diversity has increased overall, extreme black-white segregation persists. On June 25, 2015, the Supreme Court handed down its decision in Texas Department of Housing and Community Affairs v. The Inclusive Communities Project Inc. case. And fair housing advocates breathed a sigh of relief. The unexpected ruling is a triumph for civil rights activists also. The decision in this case will not only profoundly impact the housing choices of millions of Americans of all backgrounds but it will also shape the fabric of the neighborhoods and communities. Disparate impact theory is a vital tool for fair housing advocates. It allows them to challenge institutional behaviors that harm minority groups, without having to go through the often impossible process of identifying explicitly discriminatory motives. For decades, disparate impact liability has been a critical tool in ensuring that the Constitution's promise of equality extends to all persons regardless of race. This article analyze Inclusive Communities case, put stress on that whether disparate-impact claims were cognizable under Fair Housing Act and the relations between disparate impact theory and equal protection clause. Hope to gain something for us to learn.