I never heard of that, it is very interesting, and to be honest it is nothing new, people have tried to ban technology they don’t understand or that they think is harmful for them, when Benz designed his motorcar it is reported it was considered a thing of the devil to have a car not powered by horses.

But bitcoin give us a lot of advantage of using it. It's also help the online business to grow faster. Bitcoin used for cybercriminals or not it is depend on the people. 

In these cases that is why some countries are banning bitcoin for good because of some criminal activities that getting idea from the technology of bitcoin, they can surely control the anonymity of bitcoin, we can surely say this is just normal because all of us can surely work out with bitcoin and use it on every users free will and just like fiat money bitcoin can surely be use in these cases, but I think not all transaction are just criminal base there is such as making their life change because of bitcoin. 

What do you consider to be helpful to the economy?  For the government to say what you should and should not do?  And everyone obeys what the government wants?  Government knows best?  People aren't supposed to serve the government.  Government is here to serve the people.  If you are harming someone else with criminal activity, in that there is a victim, of course that needs to be understood and minimized.  But Bitcoin doesn't really support too much of that type of crime.  It supports crime in the form of trading products or services that are simply prohibited by the government, but at the same time, have no victim.  Understanding that the government doesn't care at all about your life or health, tell me why these prohibitions or lack of freedom exists?

Criminality will lesser if bitcoin is used worldwide, but online security of blockchain network should be strenghten due to were vulnerable of hackers attack online. So this situation of bitcoin is very anonymous but disadvantages also takes place over it and we cannot prevent that to happen in easy ways. Good thing about bitcoin money is, its not visible to human eye having thar bigger amount of money in you and unlike fiat cash you're vurnerable to be robbed, because it has physical appearance.

I think these are two very different things and do not be equated, because later it can give a bad perception of bitcoin

Criminality is everywhere even in temple and church  also , bad guys are everywhere and we can't only say that bad guys makes the bitcoin culture worst. They will be everywhere to make the situation worse. Actually bad guys do criminality even with fiat currency also and they does their job very well with banking system also sop when people blame that bitcoin is used for illegal purposes. They meat to say as if real money is not used for criminality. All technology have it's positive and negative side and we should accept it. None could have only positive point because there's some bad guys who is ever ready to spoil the culture and the main purpose of the technology. So we have nothing to do with it. We have to do our work and bad guys will do their work but we have to find solution to eradicate such happenings done by bad guys.

For the issue of bitcoin with criminals can be seen in many countries which is in the spotlight is indonesia.

a few months ago, indonesia was attacked by a hacker called virus wanna cry, the criminals asked some money to bitcoin for exchange of existing data.

A lot of these cases because it is unfortunate for such problems to be damaged both the company's name and the bitcoin itself.

It is unfortunate . . . 

Anything and everything of value will and has been used for crime, Bitcoin no more than anything else.  FIAT has just as high a percentage overall, but that is not news anymore, it is just everyday fact.