We just had a flight attendant be a hair snarky to people trying to get earphones from her (sponsored by Avis) when they had their own. I thought she was a bit rough but nothing out of the ordinary for FAs dealing with crazy PAX all day, but, he was annoyed because she didn't know his earphones only work through the iPhone lightning port. She (and I) are white, the pax, and another random pax next to him, were both mixed spanish/black/something like that. They both decided together that she was being racist. I rolled my eyes. I had just watched her be short to everyone else on the flight too that also had their own headphones. Needless to say... oy.