I have no idea because I have never lived anywhere else. Perhaps not being from here and having the state’s propaganda in your mind has possibly disarmed you. I have had it happen to me quite a bit. Even little White children getting into elevators have done it in doctors offices, 5 star hotels, and business buildings. I’d say if you were paying attention, you would have noticed it. Even a friend who is a Kenyan doctor in the deep South had to have a similar experience explained to him and his young family.
America is a racist nation. If you don’t see it and experience it, regardless of your ethnicity, it’s because you’re not paying attention. Elevators are one of the easiest place to watch for racial microaggressions.