Kind of already been done,but with little known actors to the extent I have forgotten the name of the film.Basically an aryan nation member with swastika tattoos leaves prison and meets a black girl ,mr white nationalist can't help but be attracted to her and gets past his innate racism, and the black girl look past the tattoos and what he was put away in prison for in the first place (a violent racist crime against a black man I think) The film never got much attention,it is about ten years old now I think, .
However ,you are right, some powerful people have all this interracial stuff on the agenda just like all the gay shyt , and they probably think white men and black women are the toughest nuts to crack. Unless you are talking about aged flabby and sick white men and under age looking asian girls obviously...
I personally think it's about corporate masters ,the real people who run western nations,wanting to stamp out forms of nationalism and reactionary behaviours, they want us all to have no sense of belonging , and just to buckle down to a shytty low waged job.