Some neighbors of mine recently took a vacation to two countries:
Britain and France
When they arrived at Britain, they were friendly greeted and treated as guests. They said the Brittish were very friendly people, hospitable, and just downright funny. When they mentioned they were going to France, some Brittish guy went "French, pewy" and made a spitting movement. (Or he actually spat)
So my neighbors leave Britain and move on to France, so when they get off the plane they obviously have to find some means of transportation to a hotel, and arrive there at night. The clerk is snobbish and gives them a room. The next day, they wake up for lunch at a French cafe', and so leave and head to a French Resturaunt. When they get there, the waiter, although knowing English, did not speak it. So, they ended up getting some unpleasent food, and therefor ate at McDonnals for the rest of their trip. Always a helpful McDonnals nearby!
My neighbors are not very opinionated on politics or ethnicity. They dont care if you are French, German, Spanish, Italian, whatever. Everyone is a person. But this little run-in with French people only strengthened my opinion.