Mei that is alright but there are repeated attacks by these people at number of places all over the world and most of the times they do get away. Now this not fair-the guilty need to be marked and pinned and punished. It may sound inhuman but if they are punished in a harsh manner they will never dare to commit such heinous crimes. It is so sad to see innocent people getting killed every second day and you don't know who is being targeted and when will they strike again. It is like a dangling sword over your head-how long this can go on?