Was the Child Sex Slave Industry around back in the 70's and 80's (when NYC was pretty dangerous)?

To me that is scarier than potentially being shot or stabbed for being the wrong guy in the wrong place.

Knowing a tiny bit about Aryan Brotherhood, sex-slave abduction is a danger in every city.
Everytime I see a flyer for a missing girl I think of the book, SOLD by Patricia McCormack (every parent and aunt/uncle ought to read SOLD)

So I guess what I'm trying to say is: If this sex-slave problem was around back then and is still around today then I would vote older NYC as more dangerous.