Muslims in the Arab Press Condemn ISIS
Faced with the unrelenting reports about the sufferings of Christians and other minorities in Iraq and Syria, even Christians who are friendly toward Muslims can be perplexed and ask, “Why aren’t Muslims speaking out against these atrocities?” The answer is: Muslims have been speaking out in the strongest terms, condemning the crimes against humanity committed by ISIS (or, as it is increasingly called, IS) and others in the name of Islam.
So, why do we not hear more of this?
The first reason is because Islam is not a structurally centralized religion. Unlike, for example, Catholicism, there is no one person or institution that can speak with authority for all Sunnis or even all Shiites — to say nothing of speaking for all Muslims around the world.
The second reason is that there is a huge number of newspapers in Muslim countries throughout the world. Many, if not most, of these newspapers appear in languages unfamiliar to people in the West. Sometimes, it is not a question of Muslims speaking out, but of others just not hearing. Often, the “not hearing” happens because people do not have access to sources or just do not speak the same language. But the voices are out there.
World's top Muslim leaders condemn attacks on Iraqi Christians - Vatican Radio