In America, it most certainly is ignored.
I'd have to agree. I don't really recall this being talked about much in HS or in college, and in all the times I've talked about this subject with people, I'm pretty sure it has never come up.
I'm sure its talked about in some corners as 0% alluded to but in the mainstream, at least in America, not really.
I think it is also worth noting that the mainstream just ignoring this tragedy because of the migrants' cultural link to a vicious genocidal regime is the sort of thing that would make this more salient for neo-Nazis. If we want to disarm it, we should at least acknowledge that it is a thing that happened and it was not a good thing.