Ku Klux Klan Southern Poverty Law Center

The Ku Klux Klan, with its long history of violence, is the oldest and most infamous of American hate groups. Although Black Americans have typically been the Klan’s primary target, adherents also attack Jewish people, persons who have immigrated to the United States, and members of the LGBTQ community.

Ku Klux Klan, Definition & History

Hate groups grow more popular even as Ku Klux Klan membership plummets: Report - ABC News

Ku Klux Klan - Wikipedia

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Report: Extremist groups decreasing in number in U.S.

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Ku Klux Klan - RationalWiki

SPLC lists active hate groups by state