VENICE — The atmosphere exiting the debut press screening of “The Voice of Hind Rajab” early Wednesday morning at the Venice Film Festival was like nothing this longtime festivalgoer has ever seen. A sea of red eyes. Copious tissues. Utter silence as friends and colleagues stumbled into the sunlight, and into each other’s arms, weeping inconsolably. What was there to say when faced with the most devastating film of the festival, and perhaps the year, depicting the present horror in Gaza that includes the killing of Palestinian children and humanitarian workers at the hands of Israeli forces?

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