The glorious strains of gospel music wash over the West Bank in Connie Field’s potent new film. As the Palestinian National Theater and an African-American choir mount a touring play about Martin Luther King Jr., an impassioned cultural exchange ensues and attitudes are altered. Al Helm – Arabic for “the dream” – shows artists meeting across worlds; it refracts the fierce and appalling political situation through the lens of theater; it weaves together threads of suffering and courage, political activism and artistic creation. Field – an Academy Award-nominated and Emmy Award-winning director – has folded multiple perspectives and forces together to truly moving effect.