9/11 is a very sad day, for all humanity. The question is what have we learn from the event? Are we learning to hate more? Religious killing has happened for thousands of years, ironically going against the teaching of all religions... The people who incites hatred, twisting the teaching of Islam to serve their own agendas are the one to be blamed. Those Palestinians dancing on 9/11 are filled with hatred, are we going to be the same: hateful people? We have less excuse than them: we are supposed to know better.