How can America come back from this place of soaring hostility and distrust? Consider Yakov Argamani, the father of 26-year-old hostage Noa Argamani, a young woman who was abducted by Hamas at the Nova music festival on Oct. 7 and remains captive. Argamani empathizes with Palestinian parents who lost children in the Israel-Hamas war. “I’m fighting in my own way,” he said about his unlikely approach, “not with anger, through dialogue.” Or the Black families of the victims killed in 2015 by a white supremacist at Mother Emanuel Church in Charleston, S.C. They forgave the killer to his face just...