If you want to witness a massacre on television, take at look at this debate on MSNBC’s Morning Joe between Joe Scarborough and Lawrence O’Donnell over Dick Cheney, Iraq, and weapons of mass destruction. Scarborough uses an avalanche of facts to bury O’Donnell’s contention that Dick Cheney lied about WMD and based the case for war on a “wild guess.” In addition to all the sources Scarborough cited and who claimed Saddam Hussein possessed WMD — including leading Democrats like Bill and Hillary Clinton, Al Gore, John Kerry, John Edwards, and more — you could add the intelligence agencies of...