If you live in the UK, you've probably seen the recent ad campaign about the dangers of unlicenced mini-cab drivers.
The Mayor of London's research claims that "unlicensed cabs provide a cover for some of the most serious crime in London: in the year leading up to October 2002, 212 women were sexually assaulted by illegal cab drivers - 54 of these women were raped."
Nope. I can't think of a caption for this either. From here.