How would it work practically?
If you had two neighbours, Alice subscribes to a government that outlaws racist abuse, Bob subscribes to one that doesn't.
On dark evening when Alice is out, Bob smashes Alice's windows and graffiti's "GO HOME, you [insert racial slur]
!" on the front of the house in big letters.
Bob would have to be 'extradited' into Alice's jurisdiction for something that isn't a crime in his jurisdiction (like being extradited to a country where blasphemy is a crime from a moderate country that sees it as free speech).
The extradition authority (Police? Border control?) would have to enforce all laws and know which were in place when the crime was committed. Bob and Alice could have the same government but Bob switches to the hard line one, smashes Alice's windows and switches back. When he did the 'crime', it wasn't as the laws in force at the time permitted it.
It would be easier to set up a neo-nazi state (just get all neo nazis to move to the same neighbourhood and declare they support "Naziland" laws and promote it to neo-nazis worldwide) so this would require oversight to allow some governments nd not others? A centralsied authority?
Which laws apply in public areas?
Am I interpretting this correctly?