 The rednecks in the Louisiana coffee shop who taunt the boys, and  the two in the pickup truck at the end of the movie, were all local  residents recruited by the filmmakers. In the case of the coffee  shop denizens, the filmmakers were preparing to audition a group of  local theater people when Dennis Hopper (qv) saw Causey, Lafont,  et al, watching them and making wisecracks and decided to use them  instead.