EVEN for a nation used to violence, the two catastrophes over the 'black weekend' came as a shock. On September 4, three Hamas suicide bombers, disguised as a girl and ultra orthodox Jews, blew themselves up in a span of a few seconds near three coffee shops in a Jerusalem shopping mall during rush hour. Five civilians were killed, more than 170 were injured. Just a day later, 11 Israeli elite marine commandos were killed in an abortive raid on southern Lebanon.