I was having e-mail conversations with a woman in Canada and I referred to her as a "Canuck" in one of the e-mails. Boy did she hit the roof! "You Americans are this and that and this and that!" I was really taken aback. I really chalk most of it up to jealousy. Most Americans, I think, view Canadians as those generally nice people living to the North" and don't otherwise give it much thought. Many of them, however, seem to have a good deal of resentment for us.
I will give them credit, however, for having far better Olympic coverage than either CBS or NBC!
I live in NZ as a migrant to this country. From time to time there is always a blow against (esp non white) migrants here - there will be calls of eating fish and chips intead of sushi, watch and play rugby and ditch badminton.
If you are not British/Irish descent European or Maori (and partially Pacific Islanders), the chance is that you will have confronted some prejudice at one point. New Zealand's national identity is very wrapped along racial and (British cultural) terms: you are at the most inside if you are British/Irish or Maori, the second circle are those with British colonial backgrounds like Indians, Pacific Islanders, Singaporean Chinese, and finally on the outside are those born in places that had no ties with Britain, such a Italians, Koreans, etc.
One of the ways to enrage native born Kiwis is to say how so-and-so is done far better at the country of your birth than in NZ, and the surest way to et them up in rage is to praise third countries, particularly the United States.