Meta’s Oversight Board announced on Tuesday that it will review three cases of the use of the pro-Palestinian phrase “from the river to the sea” on Facebook to determine whether they constitute “acceptable” speech. The review is aimed at creating a policy regarding the use of the slogan, which is often chanted by supporters of the Palestinian cause. There has been an uptick in its usage since the start of Israel’s war on Gaza last October. According to the Oversight Board, three posts were shared by users on Facebook in November using the phrase, with the Board now reviewing whether the conten…