"Many more other members of society had suffered greater numbers of loses either as a race or religious group compared to just Jews"
Again, you ignore - intentionally, I believe - the fact that most of the Jews who died by the Nazis' hands were killed in a systematic attempt to eliminate all European Jews...they did not die as "collateral damage" in a war. The same can not be said for most other mass murders....and that's why the Holocaust is used, as a tool to educate others in the hope that the early-warning signs are identified, and another similar Holocaust can be prevented.