Most of the evil that people assosiate with muslims is much more cultural based than religion. Illiteracy in arabic countries is just enourmous. Combine the illiteracy with being stupid, and a culture of believing in authority. All you have to do is a very wicked or extremely corrupt religious leader that uses those poor stupid souls to be of some use by external spy agencies.

Illiteracy and believe in authority is the key problem here. And yes "we" in the western world have stupid and illiterate people, but lucky for us potential enemies have very weak agencies of influens, nothing compared to KGB, CIA, MOSAD etc.