White people in America used to hate (and many still do) depending on the ethnicity of where your ancestors came from. There are multiple stereotypical jokes if you are Irish American, Italian Americans, German American, etc... but since White people have been mixing that is getting irrelevant these days. But it was more pronounce when they started coming from Europe. There still hate and oppression between classes and regional or about someones accent.

But in Europe they do get with each-other a lot though. The Brits make fun and oppress the Irish, the French, the Poles and the Russians with stereotypes... etc. And the other way around too. If a lot of Brits move to Poland for work... then they may be oppress and constantly stereotype by the Poles there... etc.

So this happens a lot unfortunately.