Ataniell's views on pureblood bigotry
Unfortunately Ataniell has blocked search engines from her LJ and doesn't seem to have tagged the Pureblood/Death Eater posts I'm looking for, so I'm hoping some of you wankas can confirm what I've gleaned from the various wanks:

1) In spite of the fact of the usage of terms like "Mudblood" and "Blood traitor", and in spite of Bellatrix being shocked when Harry said that Voldemort was a Half-Blood, Death Eaters and Pureblood bigots hate Muggleborns not because of their blood (ancestry/genetics) but only because Muggleborns present a risk to keeping the existence of Wizards secret from Muggles. They only use terms like "Mudblood" because "Security Risk" just doesn't carry any oomph as an insult, and those characters who react to "Mudblood" the way a real-life person might react to the word "Nigger" are over-reacting. Also, Bellatrix reacted like she did beacause... umm, because Voldemort being a Half-Blood meant that he might reveal the existence of Wizards to Muggles?

2a) Sirius said that the Pureblood bigots view Wizards as a different race from Muggles, but he was wrong, wrong, wrong.

2b) Even if he was right, what Pureblood bigots actually believe doesn't make them racist, or even similar to racists, because Wizards aren't actually a different race, and the mere beliefs of a bigot play no role in determining whether or not s/he is racist.

Do I have any of the details wrong? Am I missing anything?

Thanks in advance.