I think it's about history and culture. Change the history and culture of the races, and think what happens !

In each country this history that you said, is different, why ?!

I'll tell about Brazil, just a example.

The most of people who goes a club to listen techno is white, but it's not about the music, is because the history and culture of the people, the most black people is really poor, it's answer a lot of things(what they like, fell, think, do). But there is some djs leading techno music to poor and black people and they are loving it!

I hope you undestand my point and my english...