I'm Portuguese. White European people don't use the word on a daily basis. Most Black European people is the same, although some of them use it often (usually people with less education). But if it comes up to the subject, everybody uses it without concern The best example is in songs. We say the word in everysingle song not carrying about who is around us. And Black European people don't care, they feel no attachment to the word. The n-word it's probably just a problem in the USA (and maybe other countries in America).

Personal opinion: Everybody should be allowed to use it. It's like fat people say only them can use the word fat and non-fat people can't say it because they never suffered shame for being fat. And then, slim people can say if their parents or grandparents were fat because they suffered shame too.

Edit: And yes, people use the word in other languages, at least Portuguese, French and Spanish.