By Abigail O’Leary A grandmother in Gaza fleeing Israeli bombs with her grandson while both carrying white flags was shot dead in the street. Sara Khreis told of the final moments she spent with her mother, Hala, 57, as the family fled their home in the al-Rimal neighborhood in Gaza City. However, when Israeli troops rolled in and the family witnessed tanks passing their front door and became trapped in their home by constant shelling, they decided to risk their lives and flee. After throwing on shoes and leaving with just the clothes on their back, the family – Sara, her son Tayem, four, and …