I can attest to this. Went to an event at a Jewish centre and was completely ignored: I got suspicious looks, no-one came near me or spoke to me except one lady, I was an outsider. I left as soon as the entertainment was over, though it would have been nice to stay for coffee and sample the food that was laid on.

A new family moved into my neighbourhood a few years ago and posted Xmas cards to introduce themselves, making it clear they were Jewish. They have not had any dealings with anyone since then. Their teenage son came out to play with a remote controlled car in the street, watched over by the father. The car crashed and I said something about hoping it was well insured and they didn't know how to respond and went in.

The only Jews I feel at home with are Messianic Jews who have accepted Jesus as Lord and Saviour.