Attendees at a rally for President Donald Trump swarmed behind CNN reporter Jim Acosta during his live shot on Tuesday, yelling 'liar,' 'tell the truth,' and 'CNN sucks' as the crowd egged them on.

Trump has not yet arrived at the Florida State Fairgrounds Expo Hall where supporters are filling the building and the media are awaiting his arrival.

A crowd of about 50 came up to the press area when they saw Acosta on the risers for his live shot to wave signs supporting Trump and yell 'CNN sucks' and 'Trump, Trump, Trump.'

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A crowd of Trump supporters swarmed behind CNN reporter Jim Acosta during his live shot

Trump supporters yelled 'CNN sucks'

President Trump greets supporters at the Tampa International Airport

Acosta took to Twitter to address the situation

Just a sample of the sad scene we faced at the Trump rally in Tampa. I’m very worried that the hostility whipped up by Trump and some in conservative media will result in somebody getting hurt. We should not treat our fellow Americans this way. The press is not the enemy. pic.twitter.com/IhSRw5Ui3R — Jim Acosta (@Acosta) August 1, 2018

Some had written 'CNN sucks' with markers on 'Make America Great Again' signs that they waved to the cameras. Others screamed 'fake news' repeatedly.

Later Tuesday evening, Eric Trump, who attended the rally but was not there when the crowd swarmed Acosta, retweeted a video from the Breaking911 account of the crowd yelling 'fake news' at the correspondent with the hashtag '#truth' and tagging Acosta's twitter handle.

President Trump retweeted his son's tweet.

So did Acosta, writing 'No Eric. Not the truth. And you know better.'

Rows of metal barriers separate the press from the crowd so they could not reach the reporter.

Acosta calmly completed his shot and then turned to talk to the crowd when he was done.

Later in the evening, when he was doing another shot, the entire auditorium screamed 'CNN sucks, CNN sucks, CNN sucks' - interrupting the Florida state officials who were speaking ahead of Trump's arrival.

But not all were screaming at him, several attendees asked Acosta to take a photo with them, which he did.

President Trump retweeted his son's tweet (above). So did Acosta, writing 'No Eric. Not the truth. And you know better'

Eric Trump retweeted a video of Trump supporters yelling 'fake news' at Acosta

Acosta responded to Eric Trump via twitter

The longtime CNN correspondent took to twitter to address the situation, posting a video of the crowd yelling behind him.

'Just a sample of the sad scene we faced at the Trump rally in Tampa. I'm very worried that the hostility whipped up by Trump and some in conservative media will result in somebody getting hurt. We should not treat our fellow Americans this way. The press is not the enemy,' Acosta wrote.

Trump has frequently sparred and called out Acosta, making the White House correspondent a familiar face to the president's supporters.

The president has also made the media a bete noir, calling them the 'fake news media' and the 'enemy of the people.'

On Air Force One in route to Florida, White House deputy press secretary Hogan Gidley was asked about Trump's attacks on press.

'It seems as though no matter how good the news is, the press refuses to cover it that way, and it's quite frustrating for him,' Gidley said. 'The successes continue for this president but the coverage continues to be negative. That's frustrating for him and it would be frustrating for anybody.'

But Acosta and Trump seem to have a particularly antagonistic relationship.

During the president's press conference with British Prime Minister Theresa May in June, Acosta loudly demanded a chance to participate as compensation for the president's attack on CNN - who Trump called 'the worst' earlier in the event.

'Mr. President, since you attacked CNN, can I ask you a question?' he boomed, loud enough for microphones 10 yards away to pick up.

'No, no. John Roberts, go ahead. ... CNN is fake news! I don't take questions from CNN,' Trump lectured.

Acosta continued the argument: 'Well, sir, if you're going to call us fake news you should take a question.'

Trump dismissed him and called on Roberts, who was just one seat away.

Trump hadn't arrived at his rally yet

Acosta addressed the crowd after his live shot

Trump supporters yelled 'liar' and 'tell the truth'

CNN correspondent Jim Acosta and Trump have a rocky relationship

Trump is in Tampa for a campaign rally and for a workplace development event

'John Roberts of Fox [News Channel]! Let's go to a real network,' he said. 'John, let's go.'

As Roberts sat up in his chair, Acosta got the last word.

'Well, we're a real network too, Mr. President,' he complained.

And it's not the first time Trump's supporters have slammed the correspondent.

In June, at a rally in South Carolina, Acosta was met with chants of 'Go home!' and branded 'Fake news Jim' by the crowd.

'We are here to do our jobs and report the news and report on this rally, and we're not going anywhere,' Acosta told CNN's Wolf Blitzer at the time.