The world has become a much bigger place. You used to know who to avoid, the default was someone was acceptable. Now the ones to avoid move around and it's all too likely that a newcomer is such a person.

> Now the ones to avoid move around and it's all too likely that a newcomer is such a person.

This seems a wild generalization to make, though I guess "be suspicious of newcomers" is a little biologically hardwired. What's your epistemology for believing "newcomers" are "the ones to avoid"?

I think it's still likely that most new people you'll encounter aren't malicious. I have to wonder what your mental image of a 'newcomer' looks like.