Hezbollah is armed by Iran, and has huge forces and bases. Hamas is funded by Syria, as is Islamic Jihad. There were TONS of concentrated attacks before 1967. Don't give me that BS.
Look into the fedayeen (terrorists who crossed from Egypt to Israel and raided small kibbutzes, focussing entirely on civilians). And if you doubt what was to become the PA did any terrorist attacks before 1967, you are sorely and tragically mistaken.