The first time Howard Zinn's now-classic book "A People's History of the United States" appeared on TV was in "The Sopranos" on HBO, when Tony's teenage son A.J. came home from school with a copy of the book and told his parents that, according to Zinn, Columbus was a slaveowner and murderer. Tony got mad, and replied, "In this house Columbus is a hero. End of story!" That was 1999. This Sunday, Dec. 13, Zinn's "The People Speak" – the documentary inspired by his books "A People's History" and "Voices of a People's History," will be broadcast on the History...