[Prophet in the wilderness]

The thing is ? this would be the same argument from the left if the Soviet Union had the bomb and bombed Hitler and Germany and they would be celebrating it every year in honor of communism... the reason they protest is not the supposed " horrible atrocity the USA committed " but, they are flat out plain anti-American.
If Hitler or Japan dropped a Atom bomb on the USA, the left would have said that we deserved it.
Liberalism is not only communism, it is a mental disorder.

[Wilhelm Tell]

if the Soviet Union had the bomb and bombed Hitler and Germany and they would be celebrating it every year in honor of communism...

That is so true. We would hear nothing else but how the glorious Red Army saved the world with its wonderful A-bomb, how Stalin - the most benevolent leader in history - had no other choice but to use it, etc. And if the Soviets had invaded Japan and turned it into a slave-state, Japan would now be an impoverished country and the moonbats would present it as a model of how a country should be run, much like they now praise or at least excuse North Korea.

And if the moonbats really believe nuclear war is so terrible, why aren't they doing something constructive like protesting Iran's attempt to get the bomb? Instead, they have nothing but praise for Iran's efforts.