Re: usa police will sell bitcoins for billiards of usd so bitcoin will be killed to
So, as I said, go with pizza. Quick math and that will give you around 100 triple box treats from PizzaHut for each day of the rest of your life. 
And obesity followed by a heart attack from all that dough with cheese after 10 years of stuffing yourself with 3 pizzas a day... You better invite some women for a pizza and get some children on the way or those coins will end up back in the government's hands
If they are selling then somebody will be buying, right? How does that destroy BTC? There were many auctions in the past, did they destroy BTC?
People who bout at all the previous auctions are now even richer than before. Also, off-exchange trading doesn't impact the price.