1. In Mexico. When the Mexicans found out I was from Europe and could speak some Spanish, they were so much friendlier.
2. In most of Asia. When we travelled as poor backpackers many moons ago, we could enter 5 star hotels, go to the bathroom, and freshen up without any problems. We were let in just because we were white. Poor locals were stopped by security.
3. In Yemen. I definitely got the feeling that most Yemenis hate *all* Westerners. Perhaps it didn't help that we were visiting just after the first Gulf War.