The Islamic State has released a video allegedly showing the beheading of 21 Egyptian Coptic Christians who had been kidnapped in Libya. The video was released on a ISIS-affiliated Twitter account. Coptic Christians are the largest Christian denomination in Egypt. Christianity was the dominant religion in Egypt from 400–800 A.D. before the Muslim conquests. Screen grabs of the massacre here. To find out more about this latest development, click here. This latest terrorist event follows a European terrorist attack by Omar El-Hussein that killed 2 people. Read more about that here. You can watch the video here.