You are all over the place on this. These rape gangs are not some group of capitalist elites. If you were arguing that they represent a lumpen cancer within working class communities then you'd be on firmer ground.
You've ignored everything Lisa has to say about power, about culture, and yes about race.
The exact quote you've seized on is this "both perpetrator and victim are working class and class inequality, class prejudice and class stigma have been used in allowing this national shame to take place in that the children, the victims, were seen as having little or no value. I have written about the the way white working class women are demonised when they have relationships with men that are not white. The assumption that they are slags, prostitutes and incorrigible, and this is what is at the root of the way men of Pakistani heritage have been allowed to commit these acts. While at the same time denying the humanity of these working class girls'.
What precisely is your problem with this argument? These men knew, lived among and were even 'in relationships' with these girls. Trying to paint them as outsiders takes us nowhere.