Off the top of my head there's the Daughters of the Confederacy, whose main achievement is to have fostered the lingering belief in the Confederacy was fighting

Off the top of my head there's the Daughters of the Confederacy, whose main achievement is to have fostered the lingering belief in the Confederacy was fighting for everything except slavery in public schools, and the Daughters of the American Revolution, who only in the last couple of generations recognized that slaves were worth more than 3/5ths of a person.