Members of the Ku Klux Klan parading at night in Springfield, Ohio, on September 8, 1923. The Ku Klux Klan (KKK) was originally founded in 1866, but was disbanded in the years after the Civil War. The Klan arose again in 1915 by the efforts of William Joseph Simmons. This new Klan not only targeted blacks, but Catholics, Jews, and foreigners. During the 1920s, Klan membership increased dramatically. In Ohio, membership is estimated to have reached 300,000. Text at top reads "KU-KLUX-KLAN ON PARADE SPRINGFIELD OHIO SEPTEMBER 8-1923." The Ku Klux Klan was especially strong in Ohio during the 1910s and 1920s. In Summit County, the Klan claimed to have fifty thousand members, making it the largest local chapter in the United States. Many o...