As Mel Brooks has often said, the best way to deal with tinpot dictators, fascists, tyrants, and other such persons is through humour. You laugh at them, mock them, satirize them and belittle them at every chance.
the movie this clip was taken from does not, in any way, glorify Hitler or his henchmen. It presents the final couple of weeks of his life and the events that occurred in his bunker, and Berlin, through the eyes of one of his secretaries that survived. It is a film account of her memoirs. Nothing more, nothing less.
Having said that, taking this clip of Hitler's meltdown when he realizes that everything is lost, and using it for all sorts of comic relief is exactly what Mel Brooks was talking about.
In a way, it's actually rather sad that I have to post this, as it seems to be intuitively obvious to the most common of posters here that what's going on is both funny and a repudiation of Hitler and all he stood for.
I would say that if someone fails to grasp that point, that the problem lies with them, and not with the rest of the world, who seem to grasp what's going on rather easily.
respects,