I know at least in the US you can still face charges for committing crimes against other criminals or suspect organizations.
People have been convicted for extorting others using evidence of criminal behavior, fyi.
Of course they can, however, legally bitcoin will be dismissed as a criminal money-laundering network for which there are no "victims".
And as for "QQ you are using a stateless currency so too bad", that is a statement I can understand when dealing directly through the bitcoin network. Dealing with a registered business and mixing in government currencies changes the situation significantly.