When I first got into the business, Walter Cronkite, Chet Huntley and David Brinkley were the only three people who were doing the evening news at the time. There were no all-news cable on CNN, MSNBC or FOX. Most of these journalistic enterprises were organized by and run by white middle-aged men from the Eastern seaboard. That was the prism through which the rest of the country saw the world.

That's changed considerably now. The evening news anchors are competing with the internet. They're competing with the all-news cable channels all day long. They're also competing for the attention of a younger audience that doesn't go home at night and sit down at the dinner table with their parents and watch the news.

–Retired anchorman Tom Brokaw addresses the evolving nature of the evening news broadcast [Time]