A movie-industry crackdown meant to make it tougher for minors to sneak into R-rated films isn't keeping kids out of South Park ---- their parents are taking them. Despite warnings from theater employees, parents are giving in to the pleadings of young fans of TV's South Park and taking kids as young as 9 to see the R-rated, in-your-face film, starring potty-mouthed cartoon characters in a satire that has critics applauding.