Let's have a recap. Post was started to bash BH antisemitic comment.
We have learned there is no proof to this except for the Russia media which he denied.
We learned it was the Jews who tried to kill off a whole race.
We learned it was the Jews where "kill every man, women, child, baby and infant" originated.
This will be looked backed on for centuries for how something can go so horribly wrong and backfire on you. 
We do believe that when G-d, who created is all, commands us to exterminate a race, that supercedes ethical considerations, much as an earthquake that destroys a city in Sodom like fashion or a flood isn't concerned with ethicality.
However, being as this is such a rare and extreme exception, and otherwise it is so horrifically unconscionable, that one needs an extremely high standard of proof that G-d commanded and supports both the extermination and the methodology, to the degree that G-d Himself is involved in it and there's no other way to explain the events.
If a well armed professional military were to walk into a city with machine guns and mow down all the defenseless civilians they can find, with the justification that they have a divine mandate, there would be no outside evidence supporting that G-d is condoning their actions. Even if the mandate were non-existent, the massacre would still be possible.
However, if a group of old barely armed individuals were to face an enemy militia, and instead of machine guns, they would be armed with prayer books, and their battle strategy would be to take a handful of dirt and throw it in the air and declare "G-d, we are doing our part in this war as You have commanded - now facilitate the rest", and the dirt would magically turn into poison arrows that would kill the enemy instantly, that would be legitimate evidence of the Divine commandment and intervention to have the eradication effectuated.
From the first Amaleki war, the verse takes pains to describe how the tide of battle was openly determined solely by the Jews turning to Heaven for intervention. When Moses would raise his hands and they would look away from the enemy and towards Heaven and pray, they would be victorious. When they would look away from Heaven and towards the oncoming attacking Amalekis to focus on the battle, they would be pushed back and fail. It was the effective equivalent of a basketball player missing whenever he looks at the hoop and aims and shoots, and scoring whenever he faces away from the hoop from 40 feet away, says a prayer, and tosses the ball vertically in the air. It would be so illogical that there would be no explanation by law of nature, and would be forced to be attributed to metaphysical intervention.
When going out to engage in a Divinely ordained war, the Jewish "armies" were always comprised in a fashion that completely ignored military capabilities and focused solely on the piety of the "soldiers". They would eliminate anyone who had a new wife or home they wanted to go home to, anyone with any sins, and anyone with any semblance of fear or doubt that G-d would take care of the battle for them. The war itself would look comical from a military standpoint. These barely armed sages would walk towards the enemy. If G-d was indeed supporting them, ten thousand enemy soldiers would panic and run away from one hundred of these inept soldiers and would trip and fall on their swords as they were fleeing. The "soldiers" would barely have to engage in any actual fighting - G-d would take care of it for them. However, if they were fighting for selfish or cruel purposes, and their battle wasn't Divinely ordained, then exactly the opposite scene would unfold. No matter how powerful or well armed the Jews were, and how pathetic their enemy capabilities were, the Jews would be defeated in spectacular fashion, like sheep to the slaughter. They would outnumber the enemy 500 to one and still run away in a panic and trample each other in the process. Even to the outsiders, there would be no way of explaining what happened in military terms. It would be clear that G-d was angry at the Jews and the results of what had occurred were solely from Him.
With the Nazis, or any of the other groups claiming to have a divine mandate to kill others, we saw no evidence of Divine intervention being the sole facilitator of their genocidal tactics. On the contrary, we saw well armed men with superior technology and tanks and bombs overpowering women and children and killing them. That can hardly be compelling evidence of Divinity, and wouldn't pass muster as an exception to the absolute ironclad rule we have against murder.
