The Arab regimes in '48/'49 were foolish to expel Arab Jews from the countries of which they were citizens. Just like the Palestinians they have the right to return or the right to be compensated for their losses. But please note: the Palestinians were not responsible for these acts of expulsion and they rightly reject the facile argument (put forward in retrospection), that this can be somehow construed as a mutually agreed transfer of populations, which settles the whole matter!
Palestinian sources report Gaza rocket fired toward Israel explodes inside Strip (Haaretz)
from the article: Let Gaza live