Because they plan to murder more Christians.
“Fight those who believe not in Allah nor the Last Day, nor hold that forbidden which hath been forbidden by Allah and His Messenger, nor acknowledge the religion of Truth, of the People of the Book, until they pay the Jizya with willing submission, and feel themselves subdued” (Qur’an 9:29).
“ISIS Leader in Egypt Warns Muslims to Avoid Christian Gatherings,” by Jack Moore, Newsweek, May 5, 2017 (thanks to Lookmann):
The leader of the Islamic State militant group (ISIS) in Egypt has told Muslims to avoid Christian gatherings, pointing to the possibility of further attacks against Christians in the country after two suicide bombings that killed dozens last month.
An interview with the unnamed leader appeared in the jihadi group’s latest release of its weekly Al Naba newspaper, published on the encrypted messaging platform Telegram. He also warned Muslims to keep away from potential army and police targets.
“We are warning you to stay away from Christian gatherings, as well as the gatherings of the army and the police, and the areas that have political government facilities,” the leader said.
On Palm Sunday, a Christian holiday, ISIS fighters in Egypt detonated two separate suicide bombs on churches in the country’s second city of Alexandria and the Nile Delta town of Tanta, killing 45. It was the deadliest attack against Egypt’s Coptic Christians for years.
The interview suggests the group will continue to target the minority group. In February, ISIS released a video that said Christians were its “favorite prey.”…