+1
While there have been some good thoughts posted above, I don't think the law really matters at all. When thought has become a crime (and it effectively is), anything you do or think or say that doesn't end with you sucking off Uncle Sam (or insert your own national symbol there) will end in arrests and prosecution.
Prosecutions don't even need to succeed to ruin you. They merely need to bleed you dry and put you in debt.
Aaron Swartz anyone?
Adam Kokesh? Arrested for dancing once, and recently arrested for talking.
What are some things that make you a terrorist?
* Paying for coffee with cash
* Having bumper stickers
* Believing in freedom
* etc.
I'm quite certain that some bureaucrap in some office has added "Has bitcoins" to the "terrorist indicator list".