I'm in the UK - IR couples are everywhere
Black supremacy is already happening. Black men dominate sport and much of the music and entertainment industry. Across film, tv and advertising there has been an inexorable rise in the use of interracial couples - the black men / white woman image in particular is everywhere and the trend is only going to continue.
Black 'culture' is now the dominant culture in the US and UK and is taking over most of Europe too.
All of that is underpinned by the obvious popularity of interracial porn. BNWO is bubbling under the mainstream but I think we will soon reach a tipping point and it will become much more apparent everywhere.
In addition, all IR porn is basically morphing into BNWO porn. Soon the IR category on 'mainstream' porn sites will simply be replaced by BNWO.
If you look at BNWO content on a site like pornhub, most of it is basically just 'normal' IR porn. But the simple fact that the search term 'BNWO' throws up results means that people are looking for it. And if people are looking for it then the people who make porn will know there's a market for it and start producing more and more 'proper' BNWO videos. It's a virtuous circle - the more that people search for and watch BNWO videos, the more BNWO videos will get made... which will mean more they get watched... which means more get made... etc etc etc...