It is fitting that in the same issue that we present a previously unpublished article by W. E. B. Du Bois and host a symposium reviewing new major works on his political philosophy, we also present major essays debating the contours of the color line in the twenty-first century. Immigration and a strong rightward movement in American society are rapidly remaking the demographic and political configuration of the color line in the United States. Several essays in this issue debate critical aspects of this reconfiguration such as the relative importance of cultural versus structural causes of continued racial disparities; the role, if any, that racialization plays in shaping the modern immigrant incorporation into U.S. society; and, the legacy of the Moynihan report. Complementing these essays is a symposium on two major new books that provide fresh takes on the philosophical and theoretical relevance of Du Bois's thought for our times. We are also proud, for the first time anywhere, to publish Du Bois's essay, “The Social Significance of Booker T. Washington,” with an accompanying analytical introduction by Robert Brown.