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Bill O'Reilly dedicated the last segment of his show Monday night to explain to critics why he is "being mean to Colbert."

"The liberal press is very upset, and I really don't understand why," O'Reilly said. "Colbert has made a living exclusively satirizing the right," he added, explaining that his comments shouldn't come as a surprise.

O'Reilly said that attacking the right won't be "enough" for Colbert to beat his other late-night competitors, Jimmy Fallon and Jimmy Kimmel. However, he did not shut down that possibility entirely.

"In the end, Colbert may prevail, but my analysis of him has been to the point and honest," he said. "And as you know, that drives zealots on both sides completely crazy."