I sort of assume that everybody has seen at least one parody of Hitler in the bunker ranting from The Downfall. If you haven’t seen The Downfall, itself, I recommend it; it is totally engrossing and very creepy. If you haven’t seen a parody, as it is explained on Ranker.com, 

usually the video clip starts with someone informing him of something
horrible, Hitler brushes it off as a solvable problem. Full of fear, his
commanders tell him that his solution is not possible. He tells
everyone who isn’t important to leave and then goes on a huge tirade
about something. Of course, this meme has always been in German, so
people replace the subtitles in the original German film to make Hitler
rant about pretty much anything. Examples include everything from Disney
buying Marvel, to random movie reviews, to the lack of new features in a
new tech product. 

Now the producers of The Downfall are using copyright protection to have these parodies removed. Too bad.