I think That For alot of people The Horror of 911 still lives on , the sadness, the Scared feelings as welll as anger and a whole host of emotions that we suffered with that terrible day,,, I think its also remembrance of their loved ones,/ When 911 happened THEY celebrated , so i think thats why you saw alot of celebrating last night,I dont want to judge anyone else, I am just glad this evil man is Gone, My hearts go out to all the 911 victums, Justice for them!