We are responsible for our own ignorance or, with time and openhearted enlightenment, our own wisdom. - Isabel Wilkerson

A caste system is an artificial construction, a fixed and embedded ranking of human value that sets the presumed supremacy of one group against the presumed inferiority of other groups.

Our Negro problem, therefore, is not of the Negro's making. No group in our population is less responsible for its existence. But every group is responsible for its continuance.... Both races need to understand that their rights and duties are mutual and equal and their interests in the common good are idential.... There is no help or healing in apparaising past responsibilities or in present apportioning of praise or blame. The past is of value only as it aids in understanding the present; and an understanding of the facts of the problem — a magnanimous understanding by both races — is the first step toward its solution.

They did not ask to be accepted but declared themselves the Americans that perhaps few others recognized but that they had always been deep within their hearts. NOTES ON METHODOLOGY I began this work because of what I saw as incomplete perceptions, outside of scholarly circles, of what the Great Migration was and how and why it happened, particularly through the eyes of those who experienced it. Because it was so unwieldy and lasted for so long, the movement did not appear to rise to the level of public consciousness that, by any measure, it seemed to deserve. The first question, in my view, had to do with its time frame: what was it, and when precisely did it occur? The Great Migration is often described as a jobs-driven, World War I movement, despite decades of demographic evidence and real-world indicators that it not only continued well into the 1960s but gathered steam with each decade, not ending until the social, political, and economic reasons for the Migration began truly to be addressed in the South in the dragged-out, belated response to the Civil Rights Act of 1964. The second question had to do with where it occurred. The migration from Mississippi to Chicago has been the subject of the most research through the years and has dominated discussion of the phenomenon, in part because of the sheer size of the black influx there and because of the great scholarly interest taken in it by a cadre of social scientists working in Chicago at the start of the Migration. However, from my years as a national correspondent at The New York Times and my early