Why are people in NYC so rude?

I worked as a security guard at cosmetic school, scanning temperatures of students coming in. A lot of them would curse me out or insult me under their breath. I remember one time I raised by temperature scanner at this dude's forehead and he just walked past me then STOOD THERE with this mean snobby look, as if he were a complete psychopath- without respect, without the slightest hint of empathy, just absolutely cold.

Why are people in NYC so rude?
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