ISIS supporters who call themselves 'Sons of Caliphate Army' have issued threats against Facebook's Mark Zuckerberg and Twitter's Jack Dorsey, according to Vocativ. The video, called 'Flames of the Supporters' show an image of the two founders depicted with bullet holes on a backdrop of flames.

Quartz says that the video was authenticated based on where it was hosted and the pattern in which it was first shared on social media. The group says that they vow to retaliate against the social media billionaires after their platforms took down or banned terrorism related accounts.

"To Mark and Jack, founders of Twitter and Facebook and to their Crusader government

You announce daily that you suspended many of our accounts

And to you we say:

Is that all you can do?

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 you sites, Allah willing, and will know that we say is true.”

Facebook and Twitter won't be commenting on the video. Terrorists getting upset they no longer get to see their friends sharing viral videos on their timeline. They must be really sad.