Donald Trump wasn’t finished when he wrapped up his pro-America speech to the world leaders gathered at Davos on Friday. The U.S. president held the crowd at the World Economic Forum with a continued crusade against the “nasty, mean, vicious and fake” press, and it was met with boos and laughter.

Trump told the founder of the annual forum, Klaus Schwab, that he has “always seemed to get, for whatever reason, a disproportionate amount of press of media.” When he was just a businessman, Trump said, he was “always treated well by the press, the numbers speak and things happen, but I've always had a really good press.” It was only when he ran for office, he said, that he “realized how nasty, how mean, how vicious and how fake the press can be — as the cameras start going off in the background.”

The comments came the day after news reports revealed he ordered special counsel Robert Mueller fired last June.

While on television Trump’s comments appeared to be met with some muted laughter from the 1,800 people packed into the hall, those in the audience reported there was a lot of booing and hissing.

Trump’s latest attack on the media followed his relatively downbeat speech regarding economic and trade issues, which elicited little reaction from the assembled industry leaders and CEOs. Trump stuck rigidly to the words on the teleprompter, only going off-script in the question-and-answer session with Schwab.

Trump’s speech was seen as a sales pitch for the executives in the room to invest in the U.S., saying the world’s finance leader that “the US is open for business.”

"I'm here to deliver a simple message: There has never been a better time to hire, to build, to invest and to grow in the United States. America is open for business, and we are competitive once again," he said.

Trump also reiterated his commitment to eradicating what he sees as attack “predatory” trade practices, warning trading partners that the U.S. will not tolerate unfair trade.