[Ditto]

How did the Holocaust of 6 million people get to be a Holocaust of 12 million?

Add in all the Poles, Serbs, Roma, Russians and a dozen other "non Arian" nationalities snuffed by the Nazis, and the total is 12 million. The Jews were their primary target, but not their only target.

[rmlew]

There were only two ethnic groups targeted for destruction by the Nazis :Jews and Roma (Gypsies).
The Nazis planned to thin the population of Slavic peoples and turn them into slaves. This is a real distinction, but of little consequence to those murdered. However, when talking about the Holocaust this differnece is important. I would also note that he Nazis never really got arround to depopulating the east in any serious manner. Had they won the war, things would be quite different.