I mean I don't think there's any more crime happening with Bitcoin than it is daily with cash. I don't understand the reason why people think it's used more.
Its all depends i guess. There's many people who use bitcoins for illegal activities. Life Drug Smuggling Money laundering etc .
Bitcoins is not a crime but peoples are making it like that. I think that's the reason why some peoples hates bitcoins and some countries like china tried to ban the use of bitcoins giving this as a reason. Even Most ICO are scams
