OP, I think I you are being disingenuous to suggest that all you were doing was looking for education about the subject.
You used the words "Am I just very lucky/ sheltered?" And it's the "am I" question that's so loaded. Because presumably if anti semitism is really there, then yes, you must of course be lucky or sheltered not to have come across it. There's no question.
But you ask. Which means you are suggesting as a possibility that it "isn't" really there. That it's just another of those myths dreamt up by Jews who aren't really victims at all, not like Muslims or Eastern Europeans, just to make other people look bad.
That is what I find is unconsciously anti-Semitic and worrying about the wording and tone of your post. Why did you start from the point of challenging whether it really exists, just because you've never experienced it - especially when, as you say, you are not Jewish and live in an area where hardly any of the population is Jewish?
Why would you not start from a perspective of "this is worrying, I haven't experienced it but can those that have tell me their stories"? It's the very suggestion that maybe it isn't happening at all that's upsetting and seems to me to be a perfect demonstration of the way liberal folk are somehow normalising and internalising anti-Semitism. Once again.
Wasn't it bad enough last time around?
I'm not Jewish myself, btw. But very concerned indeed about trends like this.