I think there is a great common cause between black and white working class British people. For both communities are oppressed by a myth among the rest of society - a terrible pseudo-scientific lie - that we are genetically inferior, that it is right for us to be excluded from education and jobs and cultural participation, because we bring nothing of value. This despite the fact that so much of the creative and intellectual power which drives Western culture has come from the working classes and from black people.
There is a slightly more sophisticated version, which is that black people or working class people may not be genetically inferior, but that our cultural heritage is so degenerate that it handicaps us from participation in society, and that we must learn to reject our culture to be acceptable.
I think that people who see themselves as intellectuals, academics and people in technical and medical jobs, are particularly keen to emphasise this second myth. Possibly because it reassures them. There are of course parents very damaged by poverty and deprivation, and help is needed to support them. And there is a mistrust of for example literature among groups who have been told they can not participate in it. But other aspects of culture - the arbitrary distinction between one vowel sound and another, ways of having fun, clothing styles - are not inferior, they are simply different, and I do not think they need to be unlearned.