I started to write a long response but it's not worth it. You're one of those "race doesn't exist everyone is the same" people too probably. You should come to chicago which is heavily segregated and a much larger percentage of african americans versus white people live in poverty, populate the prisons, etc. Racism is institutionalized, no matter how much you want to pretend it's meaningless. People who live together and have common experiences inherently have a common culture that is usually different from people with different experiences. If anything, it's totally ignorant and exclusionary to say that there's some sort of universal culture that applies to everyone. Your "it's all about the music" comment is an example of this. Do you really think that a Paul Anka tune that is good to dance to in a certain way means the same thing to an African American kid living in the projects today as it does to someone in England who was on the northern scene at a specific time? There is no universal music that's great for everyone.
Here's another news flash: there was a gay club culture in the US in the 80s. It's not homophobic to say there was. Not everyone who was gay participated in the culture. But it existed. Asking how the northern scene intersected with this club culture is not homophobic, it's understanding the real dynamics between two different scenes. Pretending that all races, religions, classes equally participated in every possible scene is silly.