What does this social experiment tell you about the world we're currently living in?

My mom did a very spur of the moment social experiment at the grocery store. Before she told people she's Polish and they told her, "Polish people are so friendly, they're helping Ukrainians." Today she told someone she's from Russia, and some old guy started yelling at her and saying everyone hates her. She replied, "And everyone likes YOU? How can you say I am rude when you don't know me." Then the cashier jumped in and told her she's rude and can scan and pack her own stuff. And she replied, "I come here every week and last week you told me I'm nice, but today you said I'm mean because I'm from Russia".
My mom threatened to call the manager, so she did her job but didn't apologize, and she said the old guy and his wife just stood there and stared.

For context, this took place at a Food Maxx in a small northern California town.

I'd like to hear everyone's thoughts on this.
What does this social experiment tell you about the world we're currently living in?
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