> The crime of human trafficking, on the other hand, cannot be solved this way. You don't solve the issue by removing the posts and links, because you will just get rid of a component of the crime that advertises the "root crime" behind it. And the "root crime", in this scenario, is not nearly as easy to solve and track down.
You can theoretically 'solve' it by forwarding those posts and links to the police, after which you can, in the moral view of a lot of people, wash your hands of it. That the police are complicit in a lot of this behaviour is... Well, we washed our hands of it!
The difference between these two cases is that in the case of pirated movies, there's are these organizations called 'publishers' who will shut you down, take your house, and shoot your dog, if you don't remove links to them. There's no advocacy organization for victims of human trafficking that has remotely as much power.