article_snippet: ISIS supporters have vowed to murder Twitter staff because ISIS supporters believe the site's policy of shutting down ISIS supporters extremist pages is a 'virtual war'.
article_snippet: A mocked-up image of the site's founder Jack Dorsey in cross-hairs was posted yesterday alongside a diatribe written in Arabic, which claimed Twitter employees' necks are 'a target for the soldiers of the Caliphate'.
article_snippet: Addressing Mr Dorsey personally, it claimed Twitter was taking sides in a 'media war' which allowed 'slaughter', adding: 'Your virtual war on us will cause a real war on you.
article_snippet: An image of Twitter founder Jack Dorsey in cross-hairs was posted alongside a rant in Arabic .
article_snippet: It is nine years since Mr Dorsey launched the site, which is trying to avoid being a vehicle for jihadi videos . '
article_snippet: The rant was written anonymously and posted on the text sharing service Pastebin yesterday before being shared by ISIS supporters, including on Twitter.
article_snippet: A Twitter spokesman told BuzzFeed law enforcement officials had been made aware of The rant and will assess whether The rant poses a genuine threat.
article_snippet: Both sites have a policy of taking down extremist content and blocking users who upload it, but usually by the time an account is shut down the content has spread halfway around the world.
highlights_snippet: Diatribe in Arabic posted anonymously yesterday and shared online .
  yesterday claims employees' necks are 'a target for the soldiers of the Caliphate'
  yesterday goes on to mention Charlie Hebdo and Copenhagen jihadi murderers .
  
highlights_snippet: But post then slams Twitter, not them, for 'bloodthirsty black crusade' 