While the Ku Klux Klan of the 1870s South used intimidation and lynching to establish a Jim Crow racial hierarchy, the organization changed tactics in the 1920s to meet the "threat" of immigration. Rapidly accruing political power, the Klan blended Christian values with racial bigotry, claiming that Jews and Catholics were using liquor, prostitution, movies, and jazz to subvert American values. As Linda Gordon recounts in this sobering narrative, the rejuvenated Klan became entirely mainstream, attracting 6 million middle-class men and women, only to collapse amid revelations of sordid sexual scandals, financial embezzlement, and Ponzi-like schemes.