Truth. These people are retards.
They're
frightened. They have been taught since childhood to fear nuclear weapons.
How many air-burst atomic tests were done, world over, plus the two actual uses in war? Hundreds, maybe thousands.
One more isn't going to do all that much harm. Oh sure, the ones it hits are screwed, but so was that family in San Diego who had that coward's F-14 fly into their house and kill them all after he bailed out.
Here's another factoid: Nuclear bombs are HARD TO SET OFF. That's one of the reasons they're so blazingly expensive! They're also deliberately designed and built, and here someone SMART was involved, with ignition systems that are quite fragile. A drop will break it, not set it off, many times over. Of the two that were dropped over southern Spain in the 50s, one in fact did have its HE trigger explode, but all it did was blow plutonium dust around.
Sandia National Labs has a public museum with one of the bomb casings from that "accident", it looks like a bent-up torpedo, but is otherwise intact.
If you want to "worry", then don't get near a coal-fired power plant. Those things put out serious radiation.