Your knowledge of Islam and the Prophet Mohammed PBUH seems to be limited and according to your convenience and that of many in the western world. What the IS is doing is not acceptable to any level minded Muslim, however generalisation of Islam the way you have and many others do is absolutely for reasons well known to the world. What's happening in many parts of the Muslim world is created to suppress Islam and unity of Muslims.
Your knowledge of Islam and the Prophet Mohammed PBUH seems to be limited and according to your convenience and that of many in the western world. What the IS is doing is not acceptable to any level minded Muslim, however generalisation of Islam the way you have and many others do is absolutely for reasons well known to the world. What's happening in many parts of the Muslim world is created to suppress Islam and unity of Muslims.