Anything that inspires a good angry rant in real life can be turned into a Downfall video.
Getting a peer reviewed research paper through the aforementioned review process can be a stressful, rant-inducing experience. Remember, in order to be published, the paper is read by three (usually anonymous) reviewers who work in the same field of science. They judge things like whether the experiments described in the paper were done well enough, whether the work is original, and whether the take-away conclusions the scientist is presenting match up with the results of the experiments.
Last year, I wrote up a longer piece explaining peer review in more depth. Give it a read, and then see if you're surprised that there are multiple versions of peer review Hitler.
Above, Hitler is having problems with the third reviewer on his peer review board. Below the cut, Hitler's grant proposal is rejected by the National Institutes of Health.
Thanks to Steven Ashley for opening the wormhole on these science-based Hitler videos for me!