(Commentary by Gerard Robinson, fellow of practice at UVA’s Institute for Advanced Studies in Culture) Sociologist W.E.B. Du Bois wrote in 1903 that “the problem of the Twentieth Century is the problem of the color line.” A new survey about U.S. politics shows that race still complicates how Americans address civic and socioeconomic challenges 118 years later – and partisanship continues to influence the problem now, as it has for generations.