Days after the 1945 Hiroshima attack, a second US nuclear bomb hit Nagasaki in southwest Japan, killing around 74,000 people.

Why is it okay to make memes and jokes about Hiroshima and Nagasaki?

In the nervous aftermath of the Hiroshima bombing 70 years ago, citizens spent decades on alert for a nuclear war that would wipe out billions in a radioactive firestorm and render Earth uninhabitable.