It is difficult to believe these "stories". Can anyone be so dumb to actually hire a murderer for just $5,000? I still remember the case of Ross William Ulbricht. The FBI wanted to make sure that he remains behind bars for the rest of his life and it is being alleged that they created some fake web chats showing that he hired contract killers to take down his competitors. It is very easy to create fake web chats.
The important thing in this case is the name of Bitcoin.
I think governments want to make bitcoin look bad because the whole world depends on cash, and governments know that.
Bitcoin will take a lot of power from them.
Now, they may want to tarnish the identity of Bitcoin with news or fake deeds and pretend to people that Bitcoin is bad.