Television.

A sad thing happened to documentary films when they moved from theatre screens to the television. This process led to declining popularity of these films. If Robert Flaherty was the grandfather of documentary films, then father was the greatest broadcaster of all time, Ed Murrow. During the Vietnam issue, creeping self-censorship started, not a single documentary ever raised the issue of obscene waste of human life in the war. There were occasional bursts of brilliance, such as Arthur Ban-on's "Sixteen at Webster Grove" and Frank De Felitta's "Song to the South." But reports on issues that were agonizing the U.S. became fewer and fewer. Public television seemed a new hope for the documentaries but so far it is not up to the expectation.