Can't say I disagree with that, but do you agree that the American black-white situation is closer to the Australian situation (in term of current political and social dynamics, not in terms of history) than it is to the Walloon-Flemish situation, or the Hutu-Tutsi situation, or the Han-Tibetan situation?

I'm afraid I can't speak with confidence about any of those other ethnic situations. I'm not particularly familiar with them. Australia and the United States are the two countries in which I have resided and the cultures I am least unfamiliar with. I'll take your word for it that the dynamics are more similar than the others mentioned.