1: The gist is that Muslims are commanded to fight those who do n't believe in Allah or the Last Day ( Islam 's equivalent of Judgment Day ) unless the nonbelievers pay a tax or tribute . 2: In February , ISIS released a video of 21 Coptic Christians from Egypt being executed on a Libyan beach . 3: Video makes numerous references to Christians failing to pay tax or tribute to Muslims .
1: those who do n't believe in Allah or the Last Day 2: 21 Coptic Christians 3: Christians