Explain This Passage

[potioncat]

No: HPFGUIDX 180553

 
> Julie:
snip  
> So in the WW you aren't pureblood if your blood is "tainted" by the  
presence
> of a Muggle or Muggleborn within two generations. So it seems to  me. 
Though
> I'm not sure JKR ever specified such, I did get the  impression she 
was in 
> fact
> alluding to Nazi Germany and Aryan supremacy with the whole  Pureblood
> supremacy issue.

Potioncat:

Sorry that I can't provide it, but there is a JKR quote about the 
Pureblood / Half-blood markers and Nazi Germany's markers for blood 
lines. She says something about being surprised at how closely they 
lined up.

In the Old South there were actual words for the descending degrees of 
African blood. But JKR didn't model her plan after that. We've brought 
up degrees and 1/4 blood etc etc; this is Maths, this is JKR---Half-
blood is as far as she got.