The people of America did not dance in the streets when the Bomb was dropped on Japan.
They DID, however, dance in the streets when Japan surrendered.
We were in a declared war with Japan and their government was warned that we had a devastating new weapon and that they had best call for a cessation of hostilities and a truce. They ignored the warning and President Truman gave the go-ahead.
I see little correlation between the two events and the emotions that followed.

troll