two sides?

Heard about cryptocurrencies a while ago, and from then I was fascinated by it. From my aspect it seems like it could bring freedom that is so needed, but could deliever crime and black market to a next step with it. How can the world handle that? Is there any way to stop it spreading? Does all this lead to anarchy? And if does, tell me please your thoughts about this video

You can't use only one side of a coin :)