Technological tools are also white to abuse, even violating human rights. If you start to investigate in DeepWeb, any type of these deplorable things are commercialized, there are specialized pages that make the bitcoin can not be traced or that simply change it to another currency like Monero, and there is everything, pedophilia onwards .

 You can not cover the sun with a finger, however for this kind of unpleasant things, the FBI follows them and many times this type of people with those kind of sick inclinations can be caught when their computer security fails or they have some carelessness .