FILE - In this Friday, Jan. 28, 2011 file photo, a Palestinian man shouts slogans as he carries a banner that reads in Arabic, "Erekat, Abbas, no legitimacy for you to give up my right and my children right," during a rally against Palestinian President Mahmoud Abbas and his government, in the Palestinian refugee camp of Yarmouk near Damascus, Syria. Since the start of the unrest, Syria’s half million Palestinians have struggled to remain on the sidelines, saying they have little to gain and much to lose by taking sides in the fight between President Bashar Assad’s regime and the armed rebels seeking to end his family’s 40-year rule. (AP Photo/Bassem Tellawi, File)