It's very commendable of rock stars to help expose human rights abuses around the world.
British rock legend Peter Gabriel has formd an organization called Witness that provides video equipment to human rights activists to record such abuses.
I suspect he may not be aware of the horrific abuses suffered by hundreds of thousands of young women and even children, at the hands of human traffickers pandering to men seeking instant, no-strings-attached sexual gratification.
In which case, someone should send him a copy of The Natashas: Inside the New Global Sex Trade.
Then again, no doubt it would be extremely difficult to film what goes on behind the closed doors and barred windows of brothels and "breaking grounds", much less expose it to public view.