No terrorism is not the sole property of Muslims, but Wahhabi extremism has a far reach, and is responsible for a large portion of the problems in the world today. Terrorism and insurrections in China, the Phillipines, Malaysia, Thailand, Mali, Nigeria, the Maghreb, Syria, Turkey, the Balkans, Russia, India, etc... can all be traced to Gulf money and Wahhabism. There's a Gulf sponsored Madrassa in my wife's village (population, maybe 1000) in the middle of nowhere, in a country that most people have never even heard of.

So while I'm aware that terrorism is not the sole domain of Muslims, the Wahhabi sect in particular has certainly caused a lot of it, and while we can debate no true Scotsman until the end of time, everyone knows there is a problem - and we all know where it comes from.