I have a friend who recently moved from the poorer side of the town I live in to the richer. (I’ve always lived in the latter, richer area.) And he was talking about how striking it was to him that on the richer side, strangers would go way out of their way to avoid interacting or making eye contact or anything, but the moment you forced the issue and start actually talking to them, they’re the nicest people ever. The other side of town, interaction wasn’t avoided the same way, and they wouldn’t necessarily be quite as nice in their interactions.