It is a certain fact that not all Muslims are terrorists, but it is equally certain, and exceptionally painful, that almost all terrorists are Muslims.

Far from true. From Belfast to Nepal and from Sri Lanka to Japan to Oklahoma, and a whole load of places in between, there are examples of terrorism which has nothing whatsoever to do with anything to do with Islam.

There has been Christian based terrorism, Jewish based terrorism, Sikh, Hindu and even Buddhist terrorism. And plenty of Atheist terrorism. Whatever the belief system may be, at some time and place you are going to find it used as a justification and support for terrorism.