Palestinian filmmaker Ahmed Mansour’s new film, “Angel of Gaza,” tells the story of a Gazan family’s experience with war, separation, and diaspora through a focus on the family’s young daughter. Nadia Yaqub writes that the film raises troubling political questions about the steadfastness which for decades has been a cornerstone of Palestinian resistance. What does it mean for the Palestinian struggle that families like Malak’s must leave Palestine to survive?