So asking if you have Jewish ancestors is "casting aspersions"? What's that about?
You fell for it.
Yes, I thought that that remark, and Allen's angry reaction, were a graceless way of responding. His response should have been an appearance of polite interest in the question of genealogy. All Virginians are interested in genealogy and he would have offended no one if he said, "Really? How very fascinating. You appear to know more about it than I do, so I can't really give you an accurate answer. And at the moment, I don't have time to do genealogy research. But evidently you do, so why don't you look into it? I give you carte blanche to rsearch my family roots. It's not clear, of course, what possible bearing my ancestry can have on my present character--that seems the kind of idea we gave up here 200 years ago--but I'm sure that no matter what you come up with it will only underline my ability to serve the diverse people of Virginia." Heh heh heh. Turn the tables on the hypocrite questioner and show he's unflappable and more enlightened than she is.
But Allen can't/won't do that kind of thing. No, he won't be the next president. He loses his temper and he's a bull in a china shop.
I think the "aspersion" was the inference that he would hide his Jewish ancestry. (Like Kerry did when he claimed to be Irish for years.)
Asking ANY questions about ancestors should be off base, whether they are Jewish, Chinese, black, or little green men from outer space. Allen was right on to tell the reporter to focus on something that matters--like the issues.
It was about driving a stake through his own heart as far as any future national political office is concerned.