Well there might be a correlation to the increase in crime rate with bitcoin, because we can't deny that bitcoin anonymity is such a great thing for the criminals. It'll be really hard to track them, and the value is high too, really worth for them. I heard so many criminal cases about bitcoin, scams, money laundering, illegal buying using bitcoin and such. Of course, with bitcoin coming, they have something easy and useful for their crime. But is it bitcoin fault? No it's not. Although it might be upsetting for us to hear bad news or talks about bitcoin, but well they sure have correlation, although the increase of crime rates won't necessarily because of bitcoin, even if there's no bitcoin, those criminals will still find other way for their crimes.
Correlation doesn’t imply or mean causation. It’s a fallacy. There WILL be an increased rate of use of Bitcoin whether it’s for crime or legitimate transactions simply because Bitcoin will enter markets, especially inefficient markets that banks will not service, and make the efficient.