A Jewish mom and her husband were attacked and beaten at a Brooklyn elementary school graduation by an Arabic-speaking family — who taunted them with shouts of “Free Palestine!” “Gaza is Ours!” and “Death to Israel!” she told The Post. The mayhem erupted at PS 682 in Gravesend just after the school’s fifth-grade graduation — which was themed, ironically, “All you need is love.” Instead, the Jewish woman’s husband was thrown to the ground by members of the other family. One man put him in a chokehold, he said. Others grabbed his legs as they kicked and punched him. One...