Why did the Ku Klux Klan use intimidation during Reconstruction after the American Civil War?

During the Reconstruction era, the Ku Klux Klan utilized intimidation and violence as a deliberate tool of terrorism to dismantle the political and economic advancements of formerly enslaved Black people.12

Following the American Civil War, the federal government enacted policies to grant Black men the right to vote and to foster African American political participation. This progress sparked a violent backlash from white Southerners who were committed to maintaining white supremacy and a social order of quasi-servitude. The Klan functioned as an underground resistance movement, using nighttime raids, whippings, and killings to terrorize Black citizens and their white allies.213

By targeting newly enfranchised freedmen and those who supported them, the organization sought to suppress Black political power, punish those who challenged the racial hierarchy, and ultimately restore white rule throughout the South. This campaign of fear was fundamentally an attempt to negate the civil rights gains of the era and enforce racial subjugation through violence.132