 This fostered xenophobic sentiments towards urban immigrant communities who typically argued in favor of abolishing prohibition.These sentiments led many in Denver to join the Ku Klux Klan (KKK) both because it opposed foreign immigration and because it defended prohibition.The KKK became a powerful group in Colorado during this time, helping to elect KKK members Benjamin F. Stapleton mayor of Denver in 1923 and Clarence Morley Governor of Colorado in 1925 and receiving government postings for many of its other members.