The Racial Divide The website http://vallandingham.me/racial_divide/\#pt uses data from the US Census to visualize where whites and blacks live in different cities. Figure 2.98 gives a heat map of all the census tracks in St. Louis, with each track colored according to the racial composition (white to black).

Figure 2.98 The census tracks of St. Louis, colored by racial composition Also, the space between tracks is shown proportional to the change in racial composition between neighboring tracks. Comment on what you see.