Casualties of War, Brian De Palma's devastating and brilliant 1989 feature film starring Sean Penn and Michael J. Fox, tells the true story of the rape and murder of a young Vietnamese woman by a patrol of American soldiers. "When you leave the theatre," wrote Pauline Kael in her review, "you'll probably find that you're not ready to talk about it. You may also find it hard to talk lightly about anything." De Palma himself said: "It's a film I...