On display to the world to satisfy morbid curiousity for the sake of it. Not much else. Most rational people - who don't need graphics to comprehend the atrocity, by the way - are more likely to immediately question the type of mentality that would publish them. If you you think that people's gut reaction is sympathy, you're wrong! It's revulsion, and many won't even bother to read the text!
Ex-FM Lieberman: Firebomb attack in Jerusalem a reminder that norm is Arab terror against Jews (Haar