 The second Klan was a formal fraternal organization, with a national and state structure.During the resurgence of the second Klan during the 1920s, its publicity was handled by the Southern Publicity Association—within the first six months of the Association's national recruitment campaign, Klan membership had increased by 85,000.At its peak in the mid-1920s, the organization claimed to include about 15% of the nation's eligible population, approximately 4–5 million men.