Those people are Neturei Karta. They're not pro-Palestinian as much as they are anti-Israel on religious grounds not for humanitarian reasons. Their relationship with the Arab world in general is incidental "the enemy of my enemy is my friend". Their name is, "Neturei Karta" which is Aramaic for "[the]Guardians of [the] City". The "city" being Jerusalem which they are intend to be guarding from Zionists because of the Talmudic prohibition for Jews to control Israel. They are pro-Palestinians as a result of their anti-Zionism, not the other way around.
Are you essentially of the same understandings, but not so activist about it? A pragmatic anti-Zionist?