"The origins of the Chicago race riot of 1919 are to be found, not in high-level policy, but in gut-level animosities between black and white people who were generally inarticulate and presentist-oriented, and who did not record their motivations or feelings for posterity. . . To explain the Chicago riot, this evidence has to be found; and though such evidence is not abundant by any means, it does exist."—From the preface