Park Avenue Synagogue inserts the Israeli national anthem, the Hatikva, into its Yom Kippur liturgy, as Rabbi Neil Zuckerman praises his son for overcoming exile in New York and going “home” to Israel and joining Israel’s army. “There is no mistaking it: Zionism is the synagogue’s core value that takes over at a key moment in the Yom Kippur service,” says one observer.