punkofnice - What I've found when traveling the world, is that almost every country or continent has some sort of racial or religious division.
In USA it's black vs white. In most of Europe it was arabs vs white (I was in Holland and they were saying how they don't like the arabs and their kebab stands, they are dirty, bring crime, etc). Also in Europe I saw northern/more white vs southern/more tan. In Egypt it was muslim vs coptic christian. In Iraq sunni vs shiite. Around Russia, Ukrainians are hated.
If there is not a racial division in a country, then they create a religious one, and if not probably something else. (remember the class division and shown in titanic?) and if not that then political division, (I hate republicans, I hate democrats).
I guess people just like to hate.