The only good thing about the holocaust is that we can learn to prevent it happening again … the methods used e.g. singling out the “other”.
There is a certain trend among the alt-right to paint “the Muslim” as raping savage (“rapefugee”). It bears a striking similarity to the way jews were portrayed in this letter and nazi propaganda in general.
Therefore papasans comment IMO wasn’t inappropriate… unless you think such things can’t happen elsewhere.