Hiroshima
Nagasaki
The point IS not to suggest these bombs aren't still devastating or destructive, OR that we can simply "brush off" their usage. I hope they're never used as the cost will be unbearable. But the narrative that it'll be "armaggeddon" is a little misplaced. This isn't the 80's, things have changed, most nukes are low yield now with reduced capability to create fallout.
Plus there are fewer of them, we have better detection and capacity to destroy them once launched, with multiple sites across Europe. Russia now has too many targets, with too few nukes that would survive being shot down. the ones that would would be catastrophic; but the world survived Nakasaki and Hiroshima. In the 80's it didn't look like we would, today it's a different story. The whole point is nto to spread fear. We already know they should never be used, scaring people as to their destructive power, when we already know it, helps nobody.