Recently, I heard report on national TV.
Police find some drug dealers and had interview with journalists.
They explained that it was very difficult to discover them because they bought drugs in the dark web and paid with bitcoin.
So, it's obvious that bitcoin is perfect tool for criminals.
No names, no bank or government control, it's very easy to exchange bitcoin to local currency etc.
I guess, it's the same for terrorists.
I don't know how to solve it.
You don't need to solve anything.
Savages have been among us since the genesis of civilization.
Just wait til Monero catches on, as in mobile wallets come into fruition, kovri hits stable and point and click clients enabling the everyday user to easily switch through Bitcoin to Monero and back again without leaving a link become the norm.
Agents are already addressing their concerns and we haven't even surpassed one year of sales on the number one DNM.
http://www.coindesk.com/fbi-concerned-about-criminal-use-of-private-cryptocurrency-monero/