How did Howard Zinn’s seed germinate into a movement of societal self-immolation, with Columbus as the proverbial canary in the coal mine? In this interview with Joe Piscopo, best-selling author Mary Grabar deconstructs Zinn, the self-described Marxist who first and wrongly accused Columbus of genocide in his 1980 book, A Peoples History of the United States. Prof. Grabar is the author of Debunking Howard Zinn: Exposing the Fake History That Turned a Generation Against America.