These so called refugees are not refugees in the sense of being dispossessed by force. Their grandparents and parents left at the urging of surrounding arab countries who claimed that they should leave to avoid the fighting in which they were going to "push the Jews into the sea". Then they could come back and pillage. Ir just so happens that the Jews won. As a result these "refugees" have no one to blame except themselves and do not deserve to be repatriated.
Palestinians report IDF airstrikes on Islamic Jihad targets in southern Gaza Strip (Haaretz)