Among other misstatements, I've noticed your repeated use of this Klan Reunion pin with an image of Lincoln as some sort of 'evidence' of pervasive northern involvement in KKK activity. Nothing could be further from the truth. The 1925 Gettysburg KKK Reunion the pin refers to was both southern in organization and attendance. Gettysburg was a popular destination for the families of CSA veterans and one local newspaper described the 1925 two day Klan event as good for regional tourism.
While there is no question that the Ku Klux Klan made an appearance in many northern states including Pennsylvania in the 1920s, it was both short-lived and focused primarily on anti-catholic immigrant agitation. Since the Pennsylvania KKK was nascent in 1925, there was no reason for it to hold a 'reunion' at the site of the high water mark of the Confederacy.
The 2nd Klan had between 3 and 6 million[1] members (peaked in 1920–1925 period)
The second Klan arose during the nadir of American race relations, in response to urbanization and industrialization. Massive immigration from the largely Catholic countries of eastern and southern Europe led to friction with America's longer-established Protestant citizens.
The Great Migration of African Americans to the North stoked racism by whites in Northern industrial cities; thus the second Klan would achieve its greatest political power not in any Southern state, but in Indiana.
The migration of African Americans and whites from rural areas to Southern cities further increased tensions. The Klan grew most rapidly in urbanizing cities which had high growth rates between 1910 and 1930, such as Detroit, Memphis, Dayton, Atlanta, Dallas, and Houston. In Michigan, more than half of the members lived in Detroit and were concerned about urban issues: limited housing, rapid social change, competition for jobs.[67] Stanley Horn, a Southern historian sympathetic to the first Klan, was careful in an oral interview to distinguish it from the later "spurious Ku Klux organization which was in ill-repute—and, of course, had no connection whatsoever with the Klan of Reconstruction days".[68] In an era without Social Security or widely available life insurance, it was common for men to join fraternal organizations such as the Elks or the Woodmen of the World to provide for their families in case they died or were unable to work. The founder of the new Klan, William J. Simmons, was a member of twelve different fraternal organizations. He recruited for the Klan with his chest covered with fraternal badges, and consciously modeled the Klan after those organizations.[69] Klan organizers, called "Kleagles", signed up hundreds of new members, who paid initiation fees and bought KKK costumes. The organizer kept half the money and sent the rest to state or national officials. When the organizer was done with an area, he organized a huge rally, often with burning crosses and perhaps presented a Bible to a local Protestant minister. He then left town with the money. The local units operated like many fraternal organizations and occasionally brought in speakers. The Klan's growth was also affected by mobilization for World War I and postwar tensions, especially in the cities where strangers came up against each other more often. Southern whites resented the arming of black soldiers. Black veterans did not want to go back to second-class status in the United States. Some were lynched, still in uniform, upon returning from overseas service.[70]