Donald Trump launches new round of attacks on Fox News

Donald Trump is upset with Fox News ... again.

Trump took to Twitter to complain that Monday's "The O'Reilly Factor" "was very negative to me in refusing to post the great polls that came out today including NBC. @FoxNews not good for me!"

He then followed that up with a tweet in which he said, "@oreillyfactor, why don't you have knowledgeable talking heads on your show for a change instead of the same old Trump haters. Boring!" He then re-tweeted his supporters who were disparaging the network.

"I am having a really hard time watching @FoxNews," Trump wrote.

See photos of Trump with his supporters:

O'Reilly's show featured Charles Krauthammer, who was critical of Trump, and Brit Hume, who focused on polls showing Carly Fiorina landing in second place after the debate.

Trump also bashed Megyn Kelly — his target after she co-moderated the first GOP debate in August — by calling her "the worst" and her Fox News show "terrible." He even chided one of her guests, Rich Lowry.

O'Reilly, appearing on NBC's "Today" on Tuesday, said, "That's like the worst thing you can give Donald Trump is this tweeting thing. I just think this is an extension of his reality show 'The Apprentice.' This is just theater right now. He gets a lot of attention from the theater."

But O'Reilly said that Trump has "engaged people. He has forced people to pay attention, and they are paying attention, and that is good for America."

Trump's first attack on Fox News in August, in which he accused Kelly of harsh treatment during the debate, was followed by detente. But he continued bashing her after she returned from vacation later in the month.

See photos of Donald Trump through the years:

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