I don't think bitcoin alone has done anything to increase criminality. What has caused an increase in organized crime is IT. Internet allows us to communicate as never before, and by communicating, criminals can talk, organize and buy&sell over the internet. Bitcoin is simply a tool that happened to be used by some criminals, that doesn't mean bitcoin is causing more criminality. Without bitcoin, criminals would probably find another way to make exchange.

Actually the bitcoin transaction is recorded and transparent( publicly viewable ) so it can prevent someone to do criminal activity. Good country such as Japan,USA and Denmark are accept bitcoin. If I am positive thinking, probably the countries which not accept bitcoin is because they afraid about the volatility of bitcoin.

All criminals are took any currency for there criminality.So
It does not make any sense to blame Bitcoin.At present Bitcoin transaction is very big.But how many bitcoin criminals transactions, it's no way to understand.

Terrorist activities have happened before the creation of bitcoin.
This is true that It is now easier to make payments through bitcoin.
If people want they can use it for well moreover they Can also use it for bad purposes too.

Of course bitcoin can increased the number of ongoing criminal stuff in countries. Because , Bitcoin transaction and trading cannot be traced properly . For that reason, Terrorist organisations and other criminal must use bitcoin for their horrible actions. According to me, Bitcoin transaction must be controled by legal forces for the sake of innocent people.

Since bitcoin borned and raised some sucess authorities used bitcoin to say all criminals and bad things just happen at bitcoin due to be pseudo anonymous protecting the buyer and the seller. Its funny fiat does have the same problems and till today they arent able to stop neither control the big traffic over the world using fiat, but the only one bad is bitcoin because is new isnt supported by the most countries. Sure recently some hackers had focus into cyber attacks and asking bitcoin as payment but before they do the same attacks and ask for fiat, for me nothing changed but banks and politician wanna to make bitcoin to be the only bad currencie.

It is sad indeed. But considering the fact that almost all kinds of things are actually associated with crime one way or the other, there is no necessary labeling of what is really a tool for crime. Bitcoin is the same with all fiat currencies around the globe. Criminals choose what they are comfortable using. It so happened that some of them prefer bitcoins.

I think these are the two things, because bitcoin is a secure source of money, and the people with criminal mind may be never stole a currency which has no physical existence. Criminal people mostly want cash and go away, but here is not the case of their choice. It will be very difficult for criminals to steal someone bitcoin wallet. So I think bitcoin and criminality are the two different things.

actually, before the existence of bitcoin, criminality in the virtual world is already very much happening, but with the bitcoin is increasingly becoming a big chance for criminals to act, examples of the biggest things such as drug trafficking, weapons, women, and children. but not only that, people like state officials or other wealthy people can use bitcoin as a money laundering place

Yeah, criminals have a lot of ways but most of the ways are not so safe with them, however, since the bitcoin came out, all transactions of crime took place more safely and never fear of being detected by police. Bitcoin is actually a good tool to help criminals make their offenses easier but I can not deny the impact of bitcoin on us, it gives us a better economic source, we should be grateful it. Everything has two good and bad sides to help society balance, we need to accept that