As news of Pope John Paul II's death dominated the weekend, moviegoers appear to have vindicated recent accusations that America is plagued by what religious radicals call a death culture—a charge lobbed by President George W. Bush in the wake of the Terry Schiavo case—by flocking to the ultra-violent Sin City. A mostly monochromatic, digitally-rendered noir picture adapted from comic books by Frank Miller (Robocop 2) and co-directed by Robert Rodriguez (Spy Kids) and Miller, Sin City gorged on a gluttonous $28.1 million weekend estimate at 3,230 locations. Pre-release industry tracking was comparable to Constantine, another R-rated comic book adaptation,...