I believe terrorist use more fiat then bitcoin,because bitcoin has flutuation and well they cant loose money on the operation,but i believe that todays is hard to loose bitcoin as it looks stable at 440 dollars... but well they would need to show id to buy a large ammount of bitcoins at exchanges that are regulated,soo some use fiat others use crypto,but i doubt the most dark business knows bitcoin...
If somebody donates $1000 worth of bitcoin to the terrorist, and when he received the bitcoin, it is worth only $500. Will the terrorist execute the donator?