US Atomic Bombing of Japan in 1945

I think that the US atomic bombing of Japan in 1945 should be number one because it was a headline which had alot of controversy revolve around it. There is only one story that might be as big or even bigger than the US atomic bombing and it's one that i was around for which is September 11. I think that the list is alright the way it is I wouldn't change it because those were the big headlines at the time they might not be something that I could catorigize myself because I didn't witness them.