Governments have already trained the mindset of the public to reject new concepts such as Bitcoins. There's no need for an urgent massive attempt when the audience that Bitcoin needs to please are naturally fearful. Just look at the CBS report. In this sense, the government already has an upper hand.

Plus, it's very easy to use dis-info agents as well. There was something in the news about how the US have developed training and "personality generators" designed to spread propaganda on the net, specifically in message boards.