The use of nukes in WW2. You can't definitively prove a negative - that nuclear bomb technology doesn't exist at all, but close analysis of all the old nuclear bomb footage, including Hiroshima, proves that it was all old-timey Kikish movie-magic.
The video is plausible only if you have your flat-earth colored glasses on.
How very nice of the Japanese, consisting of a homogeneous people, to go along with the lie and build memorials to something that never happened.
Coudn't find it, but I saw another video (or maybe it was in this video but you just didn't watch it) showing how the wreckage of Hiroshima immediately afterwards looked exactly like that of a typical firebombing like all the others that had been going on in Japan - everything was all burnt up, but no indication of a blast wave. They also apparently sent a barge full of tnt up the river to the centre of town to simulate the big blast.
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