Big terrorist attacks are often accompanied by calls for a reformation in Islam. But it will be a long wait for a Martin Luther. There is no church or hierarchy in Islam, and there are several schools of thought, so interpretations are usually based on the consensus of clerical institutions. The vast majority of clerics argue that jihadis misunderstand their religion and the overwhelming majority of Muslims never resort to any act of violence. But that is not to say there is no need for reform.
After the attacks of September 11 2001, a rare and welcome debate erupted over the ideology and teachings of the puritanical Wahhabi Islam practised in Saudi Arabia and its role in misleading youth. Liberals were given the space to argue their case and the language of clerics grew more moderate. But then the pressure faded and so did the reforms.
http://www.cbsnews.com/news/charlie-hebdo-cover-is-an-act-of-war/