The Daily Caller Editor-in-Chief Tucker Carlson on Thursday blasted "the average working journalist" for having a "slavish, dog-like loyalty" to President Barack Obama.

Guest hosting on Fox News' Hannity, Carlson told the conservative Media Research Center's Brent Bozell that he was outraged because the media had not spent enough time promoting Ed Klein's anti-Obama book, The Amateur.

"What is it about this president that so commands the slavish, dog-like loyalty of your average working journalist?" Carlson wondered.

"[Obama is] a radical and there are so many that are just radicals in the liberal media," Bozell speculated. "But it's also that they were completely vested in him in 2008. They gave him 100 percent positive treatment. And the last thing a liberal likes to admit is that he was ever wrong."

Carlson saved his harshest criticism for MSNBC host Chris Matthews, who recently accused Newark Mayor Cory Booker of "an act of sabotage" for saying that Obama campaign ads about presumptive Republican presidential candidate Mitt Romney's record at Bain Capital were "nauseating."

"What a Stalinist!" Carlson exclaimed. "So it's not criticism, it's betrayal."

"He really is the original throne sniffer of the Obama administration," he added, referring to Matthews.

A recent study from the Pew Research Center’s Project for Excellence in Journalism determined that Romney's coverage was twice as favorable as Obama's between January and April. Romney's coverage was 39 percent positive during that period, while Obama's coverage was only 18 percent positive.

"That means Romney’s depiction by the media was more than twice as positive as the president’s," The Daily Beast's Howard Kurtz wrote. "So much for liberal bias."

Watch this video from Fox News' Hannity, broadcast May 24, 2012.

(h/t: Media Matters)