Yes they do! This is in order to keep pressure on Israel and to persist in their opinion that they all have "a right to return" to Eretz Yisrael. This is only one of the strategies the Arabs hold on Israel. If they all became citizens of the countries they live in, they'd easily assimilate and in a few decades they'd even forget what "Filistin" is. Thus they keep them out of society, refugees, without citizenship, without work, without perspective. And these camels do not even notice that they are used as instruments in anti-Israel propaganda. They are nothing but "useful idiots".