Why?

Got a call yesterday from friend.

She told me somthing happened to our friend who is now touring in China with her dance company. During few meals out after performances, one BRITISH guy started making fun of my friend’s English accent, and not just for once but three times. I couldn’t understand what’s so funny about that since she is the only person who understands and speaks Mandarin. Apparently, she ordered and explained the entire menu for them every time they eat out. Cannot think of any thing funny for a person make that kind of action towards other whose first language is not English. And after that, my friend cried in the hotel room for 5 hours.
Very disappointed of this kind of action, really.

I understand as long as there is any difference, there will be different opinions. Races, sex, and so on. Unfortunately, I am now studying in the foreign country and I have told myself that I have to be prepared about this kind of things happen to me, especially I am far more complicated then just language issue. But the question is, should we be treated like this. Shouldn’t we show a little more respect to the people who are in the different situation or status?