Shlishi: I think they would be justified in staring at you to a certain extent, because that would be extraordinarily foreign. I think the main complaint is that such people do not have any justification for staring. The fact that they even have the hava aminah to say such people are not Jewish is quiet disturbing, as my impression on Judaism was that one is defined through his ruchnias not his gashmius.
I was on vacation recently and went to a hotel with a lot of people from Lakewood. I wear a white kippah sruga and there were a lot of people staring at me. I didn’t find them staring at me uncomfortable, I found the fact that they saw a reason to stare uncomfortable.