For one, it can lead to a false sense of superiority over those people as you assert some kind of imagined genetic advantage. It can also lead to dangerous generalizations of vast groups as you categorize and pigeonhole millions as being exactly the same when this is rationally impossible. However, other-izing is perhaps the only option when faced with a very particular type of person embracing a very particular brand of ideology; other-izing can become a matter of survival.
I am of course talking about globalists.
Not the low level cronies and useful idiots within the globalist push or "movement," because many of them simply represent a underlying gullibility or stupidity among people attracted to the inbred world of academia. Instead, I'm talking about the people behind the curtain; self proclaimed "globalists" or internationalists that have positioned themselves into strategic power centers. I am talking about the people that influence or outright control government policy as they stand over the shoulders of supposedly freely elected officials. I am talking about the people that influence economic security or insecurity through unaccountable central banking conglomerates. I am talking about the men and women that desire to dictate the fate of billions.