On these .onion sites link you will find all kind of stuffs that is bizarre like you can easily lay your hands on drugs, child pornography, weapons and even very sickening services like assassins for hire.Darknet .onion links are also used for good intentions as well. In countries where there is no political freedom or have heavy censorship where do people go to voice their opposing point of view. It cannot obviously be clearnet because the ruling governments or the party keeps a track of all the online activities that happen on the internet and especially anyone who does not align their views with the ruling class elite.