Russian Plane Crash

[Anomalocaris]

Nah.  Jew killing was old hat in Europe.

During the High Middle Ages in Europe there was full-scale persecution in many places, with blood libels, expulsions, forced conversions and massacres. An underlying source of prejudice against Jews in Europe was religious. Jews were frequently massacred and exiled from various European countries. The persecution hit its first peak during the Crusades. In the First Crusade (1096) flourishing communities on the Rhine and the Danube were utterly destroyed, a prime example being the Rhineland massacres. In the Second Crusade (1147) the Jews in France were subject to frequent massacres. The Jews were also subjected to attacks by the Shepherds' Crusades of 1251 and 1320. The Crusades were followed by expulsions, including in 1290, the banishing of all English Jews; in 1396, 100,000 Jews were expelled from France; and, in 1421 thousands were expelled from Austria. Many of the expelled Jews fled to Poland.[


https://en.wikipedia.org/wiki/Persecution_of_Jews

Himmler was just an apparatchik following a well-traveled path.

No, really, he broke new ground.   Previously murderousness was always local.  Only expulsion was ever attempted on a national scale.   Germany was the first to actually conceive of extermination on a continental scale.   Nor was the effort limited to the Jews.  Gypsies would have been killed at the same time.   All the poles, Russians and Ukrainians were also intended to be worked, abused, and starved to death over a longer period, 20-30 years, so no descendants would remain to ever contest the seized lebensraum in the distant future.

Many empires have been spectacularly brutal in their conquests.  I can't think of another which quite clearly intended to kill everyone it conquered so its own population can gain undisputed possession. Nazi Germany really is significantly set apart from the normal continuum of murderousness.