CHICAGO - For 20-somethings, this is their war now -- the first they've experienced as adults, the one in which they are major players. Graphic images from Iraq are being circulated on their medium, the Internet, riveting a generation sometimes criticized for being disengaged. And many of those images involve people their age, among them 26-year-old Nick Berg, whose horrific death was captured on video -- as well as young American soldiers mugging for the camera alongside naked, hooded Iraqi prisoners. "It's the first time we can't just point a finger at a leader and say 'You did this wrong'...