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Naomi...fairness didn't come into it. The spiteful bile that this couple came out with was painful to listen to. If I hadn't been present in a professional capacity, I would have got up and left. I hear this sort of ignorant racism quite a lot these days, but this was the worse for a long time.
As someone has pointed out, they both had jobs, so the only reason that I could see is that they wanted to get away from foreigners, is that they found then to be personally objectionable. The area that live in is very pretty and almost 100% white, so I'm unsure why they were so incensed about foreigners, smelling of curry.