I mention terrorists who killed for Islamic State, but its important to remember that others use terror for other causes, for instance an environmentalist (Ted Kacxynski)mailed letter bombs to people he deemed anti-environment, and Tim McVeigh put a truck full of explosives next to a government building, and detonated it. Some of my fellow Jews were members of the "Weathermen", who placed bombs, fully intending to kill, for a leftwing utopia. And finally, in the process of writing this poem, I found a Wikipedia page on "List of vehicle-ramming attacks" which shows that there's been a lot more than I mentioned, and quite a few have nothing to do with Islamic State (though some do).