Before John Richie directed "Shell Shocked," a film focused on young New Orleanians' depressing adaptation to gun violence, he assumed that just about everybody falling dead was a casualty in a fight over drugs and turf. Many are. However, after interviewing young people who've seen loved ones killed, Richie came to see that drugs aren't always a factor.Young men and boys in New Orleans, he discovered, fight over the same things that provoke fights everywhere - girls, perceived disrespect, petty rivalries. But whereas people the world over might settle scores with their fists or less lethal weapons, young New Orleanians...