Given the choice, I would prefer to try to escape a nuclear power plant accident over getting nuked by a bomb. IIRC civilians close to ground zero in Hiroshima were instantly incinerated, and those a few miles away suffered longer agony with peeled of burned skins and other horrible long term effects of radiation exposure. I am not certain so many people near Fukushima suffered something similar.
When I worked at the lab where first sustained nuclear reaction in the world took place, there were reports of radio-active test specimens lying around the 5 square mile laboratory site during the years immediately following the initial successful chain reaction.