What happens when the Government takes over large wallets full of Bitcoins? When BTC is seized usually they lit it sit for a little while before putting up auctions. In order to get approved to participate in such an auction you obviously have to have a clear record, probably indicate what you will do with the bitcoins and deposit a fee to join. Buying bitcoin bulk is usually a tricky business so suddenly having 30K or 100K+ bitcoins up for grabs can definitely get a few whales interested..
Links
BusinessInsider - http://businessinsider.com.pl/international/people-are-making-a-fortune-buying-government-seized-bitcoins/7rthxkk?utm_source=businessinsider.com&utm_medium=referral&utm_campaign=redirect_businessinsider_com
CoinDesk - http://www.coindesk.com/us-marshals-final-silk-road-bitcoin-auction/
http://www.coindesk.com/bitcoin-price-rises-silk-road-auction-spurs-investor-interest/