One thing we have to get and set straight is the fact that governments are not particularly out to destroy Bitcoin or they are against it per se, what they are against is the money laundering which could be tagged as corruption and the terrorist activities is could help finance without anyone knowing or tracing the payment methods owing to its decentralized and volatile nature. With that, Bitcoin would be used to laud public funds. With other national currency, you CAN actually do it without being found out at first, however, if honest persons are in place, with time, the person could be fished out. It's not really the same with Bitcoin. Once laundered, it's gone.