ISIS has issued a threat to Facebook founder Mark Zuckerberg and Twitter founder Jack Dorsey over the companies’ effort to take down terror-affiliated accounts, according to a published report.Vocativ reported Wednesday it had uncovered a 25-minute video allegedly created by ISIS on the instant messaging app Telegram. The video shows a photo of Zuckerberg and Dorsey with bullet holes across their faces.“You announce daily that you suspend many of our accounts, and to you we say: Is that all you can do? You are not in our league,” a message in white text reportedly reads. “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.” -