You are threatened that you may be incarcerated for 10 years for sharing "objectionable content", more time in prison than a Cardinal charged with child abuse or even a murderer.
You are told not to share the (alleged) manifesto.
Maybe not to give attention to that person's name or his action?
Maybe not even discuss other possibilities on social media.
The Rupert Murdoch media empire fed the trolls, 'conspiracy theorists' and alt-whatever direction they're facing at the time group of people.
It seems that the empire could be inciting more violence by broadcasting his message to the world.
No one would have known if they didn't publish it, right?