Steve, I'm not so sure; I think you're talking about the difference between political terrorism and pure Nietzschean nihilism (maybe Russian anarchism?). I view terrorism as only a tactic towards a political end. I can't see how any of the orgs you listed still don't fall into the category of both terrorist *and* freedom fighter. Both are still working towards a political end state defined by a perception of righting a political wrong. Isn't any cycle of violence therefore irrelevant?
And if we're talking about nihilism versus terrorism that's a whole other philosophical discussion; interesting, but with a political differentiation outside to the OP's initial question.
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