The KKK's massive growth was driven by a sophisticated sales operation where recruiters (Cleagles) earned large commissions on new members' fees. This financial incentive, structured like a modern pyramid scheme, was a primary driver of its national expansion.

The second Klan, founded in 1915, was by far the largest, with up to five million members. Its power base was not the South but the industrial North and Midwest. While white supremacist, its primary focus was nativist, anti-Semitic, and especially anti-Catholic.

The Klan's explosive growth was not organic. PR professionals Edward Young Clark and Elizabeth Tyler treated the organization as a product, designing an aggressive sales operation and marketing message that resonated with public anxieties, transforming a failing club into a national force.

The KKK's success was not just about violence but about creating a social movement. It hosted picnics, parades, and even circuses, embedding its hateful ideology into ordinary, taken-for-granted community life for millions of white Protestants, making it seem normal and even wholesome.

The Klan's terror campaign was a holistic effort to restore pre-war racial hierarchy. Beyond suppressing votes, they targeted Black churches, schools, landowners, and even women who displayed self-respect. This reveals a broader goal: to crush any sign of Black autonomy and re-establish total white supremacy in every aspect of Southern life.

The Indiana Klan operated a highly effective political organization. It compiled detailed data on all political candidates, published approved slates in church newsletters, and organized massive get-out-the-vote efforts, successfully installing a governor and dominating the state legislature.

The second KKK's rituals, particularly cross-burning, were not historical practices. They were invented for Thomas Dixon's novel "The Klansman" and popularized by D.W. Griffith's blockbuster film "The Birth of a Nation," demonstrating how mass media can create and legitimize radical aesthetics.

Rather than building from scratch, the KKK tapped into pre-existing social networks, particularly the Freemasons. Recruiters specifically targeted Masonic lodges, leveraging their membership lists and offering a familiar structure of ritual, networking, and community.

Contrary to the image of a fringe movement, the Klan was composed of and led by the Southern elite. Eyewitness accounts consistently identified lawyers, doctors, planters, and sheriffs as perpetrators of the violence. This highlights how extremist movements can be driven by the most powerful and 'respectable' members of a society.