Well, in my country they would say: if you have got nothing to hide, then, why privacy?. It appears that is not the case just with my society but the global civ. People and internet users are not educated enough of what privacy really means to an individual. It is a foundation of democracy, liberal tought, triumph of some ideal society.
Privacy is not keeping secrets but simply keeping personal freedom.
Regarding the DW criminals, there was never a time in the history of civilization where humans didn't conduct criminal offences.
RE: How Do We Catch Criminals On the Darkweb?