I applauded loudly when the silkroad bitcoin-enabled illegal-drug website was shutdown because I knew a lot of people would draw this exact conclusion.

Bitcoin could enable a thousand good and noble efforts, but if it makes it easier to do any form of evil, that's what will get all the news and influence opinion.  That's what people will immediately think of when they hear the name "bitcoin".

We should all fight against illicit use of bitcoin to protect the good name of bitcoin.