Media Avoids Naming Names

Mark Steyn notes how the media fails to identify Islamic terrorists as perpetrators of terrorism they commit. The Canadian Broadcasting Corporation even refuses to acknowledge terrorism exists. The Washington Post goes out of its way (with nothing to back up their assertion) that rioting in France has nothing to do with Islam (H/T Powerline including here). Why do the mainstream media de-emphasize Islamic connections with violence committed by Muslims, particularly those committing it in the name of Islam?