we've not seen govs really intervene.
it makes sense btc will be tied in a high profile way to 'terrorism' ... false flag or not, it could be used that way.
they tried to link bittorrent "piracy funds terror" in the same way ... unfortunately that was a few steps removed ... this can have immediate 'hey look at what these people did only because bitcoin let them.' aka silkroad + violence
http://arstechnica.com/tech-policy/2008/03/us-attorney-general-piracy-funds-terror/