Former Speaker of the House Newt Gingrich (R-Ga.) said Monday on "Hannity" that "fake news" is a threat to honest discourse "because it teaches people things that aren't true."

Gingrich called the phenomenon extraordinarily dangerous" and said it is based on "fake education."

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He said that some of the fault for "fake news" comes from what he considered superficial courses and concentrations taught at American colleges.

"How do you have a serious conversation where the elites think Iran is OK, when Iran paints 'death to Israel' on its missiles?" Gingrich asked, referring to Hollywood's applause for an Iranian filmmaker who did not attend the Oscars in protest of President Trump's travel ban.

Gingrich traced so-called "fake news" back to the 1960s when Ronald Reagan remarked that "it is not what liberals don't know is dangerous, it is what they know that isn't true is dangerous."

He and host Sean Hannity also commented on President Trump declining to attend the annual White House Correspondents Dinner later this Spring.

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