The main reason these girls were failed was due to mysogyny and class prejudice. Girls as young as 13 were labelled prostitutes or charges weren't sought because they were too scared to give a recorded statement which was seen as them being complicit rather than abused.
The fear of appearing racist element came largely after gang members were arrested, demonstrated by the lack of ethnicity recording in the police records. It wasn't that much of a factor in the lack of investigation and support for the victims.
There are plenty of white 'grooming gangs' that weren't investigated, which wouldn't be the case if it was purely race and a lot of research actually suggests that the majority of community based sexual assault is committed by white men.
I've read most of the reports that have come out about the issue from a professional stand point and have sat in a room with a victim of grooming by white perpetrators and heard first hand, her harrowing testimony of her experience and how police dismissed her as a 'slut'.
But Yaxley Lennon and his merry little band won't highlight that because they don't actually care about women and girls - they just want to use them as a weapon for their ethno-national racist hatred and many of them have also committed violence against women and girls.
Please don't fall for it!