Bill O'Reilly is very ignorant. Of course you knew that. O'Reilly said that young people don't know what is happening in the world. Media Matters has documented O'Reilly:
Here is an excerpt:
...During the May 23 edition of Fox News' The O'Reilly Factor, Bill O'Reilly asserted that "[m]any Americans ages 18 to 24 have no idea what's going on," stating that they "get their news from [Comedy Central host] Jon Stewart and their point of view from bomb-throwing entertainers." In fact, studies have shown that viewers of Comedy Central's The Daily Show with John Stewart are consistently better informed about current events than consumers of other media, and Daily Show viewers are considerably better educated than viewers of The O'Reilly Factor. Further, consumers of Fox News in general have been found to be significantly more misinformed about current events than consumers of other mainstream media.
In 2004, the nonpartisan Annenberg Public Policy Center released its National Annenberg Election Survey, which found Daily Show viewers to be better informed on campaign issues than consumers of other late-night television programs, newspapers, network news, or cable news. In a press release, Annenberg senior analyst Dannagal Goldthwaite Young said: "Daily Show viewers have higher campaign knowledge than national news viewers and newspaper readers -- even when education, party identification, following politics, watching cable news, receiving campaign information online, age, and gender are taken into consideration."
So there, Bill.