:)Actually bitcoin it self is cleaner than any currency, we don't have any dirty money only literally and people only need to launder money when they are not able to explain and provide a legal reason as to how they've got and obtained that money.
People trying to do it with bitcoin, not possible if miners refuse to sell or any coin holder refuses to sell but when you get your coins you are no longer need to be worried because just after a mix no government can link you to anything whatsoever.