Thankfully I have not seen that myself. But I do think that sometimes we as Americans can be superior in our attitudes. Having said that, I also know that Canadians can be anti-American. When I was living near the Canadian border, I went on a trip to Vancouver with a friend with Cerebral Palsy and his wife. We were just minding our own business and just having fun. My friend with CP happened to talk a little bit loud because of his disease. At that point a smug Canadian said to us, "humph, Americans!" I responded, "Don't knock it.....we leave money!" So I know that ugly behavior happens with all nationalities!