"Lively's latest link says the same."

To be specific, this is what Joan Smith has to say in conclusion to her piece in the Independent:

"What these trials have exposed is a particularly nasty development in the commercial sex industry. Dozens of foreign sex-traffickers are serving sentences in British prisons for crimes against women from Eastern Europe, South-east Asia and Africa, and the spotlight on their crimes has diverted attention from internal traffickers. Now their activities have been exposed and the common factor is a misogyny that dehumanises women and very young girls.
Despite the protestations yesterday of Keith Vaz, chair of the home affairs select committee, cultural factors are hugely significant in such cases. Gender inequality facilitates abuse and that's what we need to focus on, not the irrelevant matter of race."

Of course it's worth making it clear that this is just one opinion piece by one feminist journalist, and as such it doesn't represent a sufficiently rigorous analysis of the subject matter, to be used in the defense of any concrete conclusions concerning the potential causes of this phenomenon.