The Roaring Twenties might be remembered for jazz, style and excitement, but it was also the decade that saw the rise of the hate group, the Ku Klux Klan. Their center of power was not the old Confederacy, but the Heartland and West. A new history of the group reveals the con man who rose as its leader, and the woman who stopped him. “A Fever in the Heartland” Timothy Eagans