Book excerpt: "Leave now, or die!" Those words-or ones just as ominous-have echoed through the past hundred years of American history, heralding a very unnatural disaster-a wave of racial cleansing that wiped out or drove away black populations from counties across the nation. While we have long known about horrific episodes of lynching in the South, this story of racial cleansing has remained almost entirely unknown. These expulsions, always swift and often violent, were extraordinarily widespread in the period between Reconstruction and the Depression era. In the heart of the Midwest and the Deep South, whites rose up in rage, fear, and resentment to lash out at local blacks. They burned and killed indiscriminately, sweeping entire counties clear of blacks to make them racially "pure." Many of these counties remain virtually all-white to this day. In Buried in the Bitter Waters, Pulitzer Prize-winning journalist Elliot Jaspin exposes a deeply shameful chapter in the nation's history-and one that continues to shape the geography of race in America.