The people in Banking industry have long associated Bitcoins with money laundering, from calling it a bubble to linking it to terrorists money they did everything in their power to destroy bitcoins. Today it's been proved that money laundering happens due to banks, was happening before bitcoins came. Deutsche Bank has been raided for money laundering, and it's pertinent to note bankers from this bank had said bitcoins is used for money laundering. It proves that fiat money is and always will be used for money laundering, it's time to stop the witch hunt against bitcoins. #ItrustBitcoinsoverBank.
I can bet it even started long before formal banking began. We can trace it down to the cowrie era. That is the way with anything that can be exchanged. What differs is the expertise and technology that have gone into the money laundering thing now. The master thievery of those who launder money is something else.