We only know one side of the story, and which has at least one incorrect statement to make the case of discrimination (a special line for EU and US pax - I never seen this happen at NBO or somewhere else).
I have to say that I have seen many that believe their certain status in this world allows them to be rude and misbehave inproperly. I don't want to say this is the case, but it again we don't know any of the facts, only a newspaper article (and we have seen many of those pass by too - too eager to report stories without presenting all the facts).