Japan also seems to be more culturally homogenized. Where as here in the US I probably wouldn't be able to recognize a word coming from someone in Alabama as English. Believe me, I've met a few people from parts of the US who I know are speaking English, but the dialect is just so far out there that I might as well go back to my high school German class. Also lately (past few years), here in the US the amount and degree of conflicts between different parts of society have been increasing. I don't want to say it's a majority of Americans that are in conflict with each other, but there's a a very vocal and visible minority that is, more so than I personally recall ever seeing.
"Don't confuse facts with reality."
-Robert D. Ballard