The obvious question to ask is, Why that is the case? Because it's shallow doctrine of killing non-believers and spreading Arab imperialism is just too obvious, doesn't need a scholar to figure it out. Why is it that it's only Muslims that have to keep shouting that it's a religion of peace, if it were shouldn't it be obvious. Till you people acknowledge the killing and carnage in the name of Islam and fix it, you can keep shouting, no one will actually believe you. Going by a modern example, in countries where "pure" Islam was and is practiced Afghanistan and Saudia Arabia, the evidence of their barbarism and intolerance is there for all to see. In Afghanistan the non-Muslims were made to wear yellow arm bands, just like the Nazi's forced the Jews to wear a yellow star in Germany. The Nazi ideology of a master race is no different from Islam, which aims for a master religion and is willing to go to any length to enforce it and where killing and lying are justifiable means.