"The Washington Post’s billionaire owner and enlisted management are among the offenders," Rubin said in a statement.

"Jeff Bezos and his fellow billionaires accommodate and enable the most acute threat to American democracy—Donald Trump."

One of the most well-known columnists at the Washington Post is leaving with a dig at owner Jeff Bezos and a new mission to focus on what she calls President-elect Trump's "radical agenda." Jennifer Rubin has quit after 14 years to help launch a platform called The Contrarian via Substack.