The terror of ISIS is often kept from mainstream media. Especially the fact that Christians are being targeted, tortured and killed for their beliefs. When you listen to the teaching of Muslim preachers you can see why they have such a hate towards Christians.
Take Dr. Ahmed al-Naqib, for instance. He has studied at the best Islamic madrassas, including Al Azhar, authored numerous books on doctrine, received awards and decorations for his academic achievements, and regularly appears on television. In one video he appears discussing an earlier Muslim mob attack on a church in Egypt, which the media and government always denounce as fitna, an Arabic word that means temptation or discord and which Islam commands Muslims to oppose.
Citing revered Islamic texts including the Koran, Dr. Naqib explained that the open display of shirk—the greatest sin in Islam, associating someone else with God, which the Koran accuses Christians of doing via the Trinity—“is the worst form of fitna, worse than murder and bloodshed.”
In other words, and as he went on to make perfectly clear in the remainder of the video, fitna (or discord) is not when Muslims attack Christian churches—far from it—but rather when Christians are allowed to flaunt their shirk (or “blasphemies”) in churches near Muslims. Fighting that—even to the point of “murder and bloodshed”—is preferable.