Could bitcoin prevent crime?
I believe Bitcoin transactions via online wallets could prevent crime. People are going to use Bitcoin for legal and illegal transactions, however criminal transactions are susceptible to crime as cash is used for the transaction...which encourages theft. If bitcoin were used for these shady transactions, perhaps with escrow, there would be no opportunity to steal currency - couldn't this prevent crime? (Aside from the original criminal transaction of course!)
You mean crimes here in bitcointalk forum like being scammed by someone? if it is, then yes, obviously with escrow, we are sure that we are not going to get scammed by someone, but if we are talking here about those crimes like buying drugs, guns, and using bitcoin in other illegal stuffs, then I'm afraid bitcoin can not prevent it just by itself.
That is why Government just pop in in this story, people use bitcoin in the wrong way, that is why the Government get rid of it. They banned bitcoin in those countries they know which are using bitcoin in illegal stuffs and for their own reasons that can affect they countrymen.