When someone asks me why Muslims don't denounce terrorism, I suggest that he or she Google the words “fatwa against terrorism” (80,000 hits), or name cities in the Muslim world that held major demonstrations against the 9/11 attacks (Tehran, Karachi). Most Muslims do not approve of terrorism. Their response to it is fear—fear of extremists who seem unconstrained by mainstream Islamic law, fear of a son or daughter becoming a "holy warrior," fear for the future of an entire faith community.
Cartoons are, by their nature, caricatures: they are oversimplified in order to make a forceful point and provoke debate. Editors know that one powerful cartoon can generate more furor than dozens of provocative articles, so they make a rough calculation: Will the cartoon generate light as well as heat? Will the publishing of it be, as St. Paul would put it, not only lawful but beneficial? Did Flemming Rose, culture editor of Jyllands-Posten, make the wrong calculation in publishing cartoons that featured the Prophet Muhammad?