THE FORWARD – Sixty years ago, a Jewish intellectual named Will Herberg published a book that jolted the way Americans thought about their religious landscape. The title of his book, if not his musty thesis, could describe a new American religious alignment that presents serious challenges for progressive Jews and Judaism today. “Protestant-Catholic-Jew: An Essay in American Religious Sociology” boldly asserted that the three Abrahamic religious denominations — Islam wasn’t really considered in midcentury academia — served as seminal and separate markers of national identity.