This is a word which is used to obscure the truth as much as reveal it. At different times many peoples have taken to non-state violent action - including Zionists in Palestine before 1948. Depending on which side you support, you can call them terrorists or something more positive - freedom fighters, partisans, even militants. And there are more. To insist on one of these is simply to insist on approval or disapproval of the cause for which they fight. Unless of course they are violent just for the sake of it, which is rare or unknown and certainly does not apply to the Palestinians in their present awful situation.
Police disperse hundreds in brawl in Kafr Manda, northern Israel (Haaretz)