 The scene where Ulysses, Pete and Delmar come upon the KKK meeting  is a reference to the scene in _Wizard of Oz, The (1939)_ (qv) when  the Tin Man, Scarecrow and Lion sneak up on the Witchs castle. The  chanting and formation marching of the Witchs guards are mimicked  by the KKK members. Infiltration is achieved in both films by  overpowering three guards and KKK members respectively and donning  their garb.