We revisited a conversation about how a damaging hoax published by newspapers almost brought down the Union during the Civil War, and how hoaxes persist today with the author of "Lincoln's Lie."

We revisited a conversation about how a damaging hoax published by newspapers almost brought down the Union during the Civil War, and how hoaxes persist today with the author of "Lincoln's Lie."

Friday night, President Trump took to Twitter to deliver one of his favorite insults to journalists: "The FAKE NEWS media (failing @nytimes, @NBCNews, @ABC, @CBS, @CNN) is not my enemy, it is the enemy of the American People!" he wrote.

The presidential election highlighted a divide that is so deep, citizens in Illinois and across the country can’t even agree on the same set of facts.  Dan Hagen explores the topic this week for Illinois Issues.