A video released by Isis has targeted Facebook chief executive Mark Zuckerberg and Twitter boss Jack Dorsey, taking aim at the duo for removing Isis accounts from their social platforms.
Dubbed 'Flames of the Supporters', the graphic film shows Zuckerberg and Dorsey being targeted by bullets and comes amid growing efforts from the social giants to suspend groups and remove posts that could encourage and promote terrorism.
The 25-minute long film appears to have been made by a group calling itself 'the sons of Caliphate army', and sees the terrorists claim to control over 10,000 Facebook accounts, 150 Facebook group and 5,000 Twitter profiles.
"You announce daily that you suspend many of our accounts, and to you we say: Is that all you can do?" the text on the clip reads.
"You are not in our league. If you close one account we will take 10 in return and soon your names will be erased after we delete your sites, Allah willing, and will know that we say is true," it adds.
According to the Next Web, these threats towards the chief executives are nothing new and both are regularly bombarded with intimidating messages over their censorship policies around extremism.
Both sites have been actively trying to fight against hate speech over the past 12 months, with staff having met with senior White House officials and US intelligence agencies to help form counter-terrorism measures on social media.
Despite the firms' best efforts, accounts can spring up as fast as they're removed - but Twitter appears to be making some headway in battling extremism, revealing it has shut down 125,000 accounts since mid-2015.
Since mid-2015, we have suspended over 125,000 accounts for threatening or promoting terrorist acts. Read more here: https://t.co/FQJeOTtPLz
— Policy (@policy) February 5, 2016
At the start of this year Facebook's chief operating officer Sheryl Sandberg asked members to drown out hate speech with ‘like attacks’ against pages professing support for the terror organisations.