Still hardly mentioned, probably half a million died at the hands of the nazi's.
Bit of a pet subject with me, YT.  I have quite the little book shelf here, of books about the Einsatzgruppen. 
Ironically, 
I wouldn't mention it too much either, on here. I'd only be laying myself open to cry downs. Sod the numbers game.
(Look; Mod's? I just got some 
Really bad news, from, and about, an old and dear mate of mine. It's spreading  

  So, my thoughts may be getting out of control, as I try to think of how to reply to him? Feel free to nuke me from outer space.)
'Funny' thing this all brings to mind? I was cruising google, one night. Came up with some European Gypsy giving an account of being in a cattle truck. During those times. 
Only, it was written as he'd said it; In some pure dialect of 
Romanes. I got the gist of it. Couldn't really 'believe' that I was getting it right. Because of what I seemed to be reading.
 That this guys mate had some problem. And a nazi guard came up and shot him in the guts. That didn't go so well. So, then, this more experienced creep comes up and says; " Good grief! Don't ye even know how to Kill someone yet? Look. 
This is how ye kill them. " And puts one through the guys head. 
I mean, FFS!
But, yeah, it's mentioned, out there. And, by the way: The next link provided a translation of the entire episode  

 Could have saved myself a Lot of word mouthing and squinting.