The Jewish prisoner was attacked after watching the news and expressing joy at seeing National Security Minister Itamar Ben Gvir.
Violence in the West Bank has surged over the past year, following stepped-up raids by Israel in response to a spate of Palestinian street attacks in its cities.
The police plans to prevent a repetition of the celebrations after the recent release of his cousin Karim Younis from prison.
Israel is a tiny country whose military punches far above its weight class. But how does it compare to its neighbors, its enemies and the world's top military powers?