Terrorism = Islam.
It has for over 1300 years.
So therefore Terrorism never took place in N. Ireland because the bombers were not Muslim?
What about the Olympic Park Bombing in 1996?
Was Eric Robert Rudolph a terrorist?
The shooter(s) at VA Tech no matter their faith are Terrorists.
Lots of non-Islamic terrorism all over the world...Northern Ireland, the Basque country, the US during the 60s and 70s, various communist movements all over the world, the bomb throwing in the US ca. 1880s, almost every separatist movement since the invention of gunpowder...
but it is true that terror is often used by Islamic groups. But not exclusively.
Even the Zionists in pre-modern Israel Palestine had people who were using terrorist tactics against the British.