Matthew Connelly, "The Declassification Engine"

Columbia University history professor Matthew Connelly, author of "The Declassification Engine," talks about the increase in U.S. government secrecy from World War Two to today. He argues that many classified documents are never made public because they expose government criminality and incompetence and that overclassification in an effort to keep the country safe is doing more harm that good.     Learn more about your ad choices. Visit megaphone.fm/adchoices