Thing is everytime another Silkroad gets raided, an equally large amount of Bitcoins are confiscated by the Federal Bureau, and when that happens the Bitcoin's price falls a bit. It again falls a bit more when they put it on an auction. So afterall are they aiding the Government to have more control on the price of Bitcoin by not keeping their funds and identity safe?
Well the country can easy rebuy those, and try to control bitcoin, step by step buying and confiscating over the years, but in the end i dont believe they have interest at it, but bitcoin will be the next gold currencie over the next years, soo countries should invest at bitcoin.
I dont know if those reports are the reality or just an updated from the total of drugs being sold, usually the media changes the numbers to make people believe, who knows if bitcoin hasnt a press being paid to clean the image.