willrocks said:To shutdown Bitcoin they'd need to shut down the internet.
Bitcoin mining relies on processing power. Guess who has the most computing power in the world? The government. NSA etc etc would have heaps of computing power. Not the basement kids with their HD7970 and quad cores.
The government can effectively screw the bitcoin system (by hoarding bitcoins for example) such that they end up getting most of the new bitcoins, if they actually gave a shit.