Republican presidential candidate former President Donald Trump arrives for a campaign rally at Trump National Doral Miami, Tuesday, July 9, 2024, in Doral, Florida.
| Photo Credit: AP

Donald Trump, the former U.S. president and presumptive presidential nominee of the Republican Party, has attacked Vice President Kamala Harris, raising questions on her competence and describing her as an “insurance policy” for incumbent President Joe Biden.

His attack against Ms. Harris, who is of Indian and African heritage, came amid chatter in the Democratic Party about whether President Biden should remain the nominee in the November 5 presidential election.

Mr. Biden, 81, has faced calls from some Democrats to step aside as the nominee following his disastrous performance during a June 27 debate with Mr. Trump in which he struggled to complete sentences or land any significant blows against his opponent.

“Whatever else can be said about crooked Joe Biden, you have to give him credit for one brilliant decision, probably the smartest decision he ever made. He picked Kamala Harris as his vice president. No, it was brilliant. Because it was an insurance policy. Maybe the best insurance policy I’ve ever seen,” Mr. Trump, 78, told his supporters in Florida.

“If Joe had picked someone even halfway competent, they would have bounced him from office years ago, but they can’t because she’s gotta be their second choice,” he said as he repeatedly mispronounced her name.

Mr. Trump said as Vice President, Ms. Harris was given two very important tasks – border security and to deter Russia from attacking Ukraine.

“First, she was put in charge of the U.S. border security. She never showed up. She’s never gone. She never went there once. And the border is the worst border in the history of the world,” he alleged.

“We have the best border in history because she has the worst border in the history of the world. Then, she was sent to Europe to deter Russia from attacking Ukraine. How did that work out? Not too good. Both times, the result was a deadly failure. Since Kamala was made border czar, the Biden-Harris administration has lost track of an estimated 150,000 children, many of whom have undoubtedly been raped, trafficked, killed, or horribly abused,” Mr. Trump said.

Mr. Trump accused Ms. Harris, 59, of being a socialist.

“I don’t think Kamala Harris’ California socialism is going to go down well with the people of Doral, the people of Miami, or the people of Florida. Because in Florida, we don’t like socialism. We want our freedom, right? We want our freedom,” he said.

“Joe, Kamala and the entire Democrat establishment have been caught red-handed in the thick of the biggest scandal and the biggest coverup…it’s a cover-up. It’s the biggest cover-up in political history. As you know, they are all co-conspirators in the sinister plot to defraud the American public about the cognitive abilities of the man in the Oval Office,” alleged Mr. Trump.

President Joe Biden’s simple act of sitting down while commemorating the 80th anniversary of D-Day in Normandy, France, gained more attention than the ceremony itself in some circles as social media users shared a shortened version of the clip to falsely claim he was reaching for a nonexistent chair.

The clip was the first of at least three out-of-context or trimmed videos shared widely over less than two weeks in June to fuel a narrative that Mr. Biden is mentally and physically unfit for office.

It’s long been standard practice in politics to spin real moments to make an opponent look bad. Yet the recent spate of misleading videos — which amassed millions of views and were picked up by right-leaning outlets around the world — shows how the reach of social media and real concerns about Mr. Biden’s age has made the tactic especially powerful in 2024.

Experts say voters can expect to see both Republicans and Democrats weaponising unflattering, out-of-context moments to label each other’s presidential candidates as weak, confused or senile — especially considering their ages of 81 and 78. Indeed, edited and misrepresented clips have also circulated about former President Donald Trump.

“Any misinformation that seems to reinforce or resonate perceptions or dominant narratives, whether they’re accurate or not, is very effective,” said Erik Nisbet, a professor at Northwestern University who studies media, public opinion and public policy in democracy and elections.

At the G7 summit in Italy, where Mr. Biden headed after Normandy, a clip of the President watching a skydiving demonstration was cropped to make it appear as though he wandered off for no reason. A wider view of the video shows he was greeting paratroopers who had just landed. And at a Los Angeles fundraiser last weekend, a pause by Mr. Biden as he left the stage amid cheers was used to say the President froze, while Mr. Biden’s campaign said he was only stopping to take in the applause.

The clips have been especially effective at activating concerns about Mr. Biden’s competency, according to Mr. Nisbet, because he is the oldest sitting president the U.S. has ever had, and he moves with more difficulty than he once did.

Dr. Kevin O’Connor, Mr. Biden’s physician, wrote in a February memo after the President’s annual physical that he “continues to be fit for duty” and that his stiff gait is the result of arthritic changes in his spine. He said that Mr. Biden has reported additional hip pain and started using a new device for his sleep apnea, but that he showed no signs of stroke, multiple sclerosis, Parkinson’s or other similar conditions.

After the fundraiser clip spread online, Biden campaign spokesperson James Singer blasted such negative characterisations as a tactic from those who “are so scared of losing to Joe Biden, they’ll make anything up” to distract voters from Mr. Trump’s misdeeds.

White House press secretary Karine Jean-Pierre in a press briefing called the videos “cheap fakes”, a term for videos edited using cheap video editing software rather than artificial intelligence.

Mr. Trump’s campaign has doubled down on the clips and circulated a meme that defined a “cheap fake” as “any unedited video of Joe Biden’s cognitive decline that the Biden administration does not want the public to see.”

Also Read | Trump turns 78, spotlighting age as central issue in 2024 race

Experts say these attacks can be iterative, with social media influencers and campaigns piling on one another.

“The attention economy within conservative media helps perpetuate these cycles of circulation and these sorts of misinformation and campaign messaging,” said A.J. Bauer, an assistant professor at the University of Alabama who studies conservative news.

For example, the Republican National Committee posted a cropped version of the video of Mr. Biden at the G7 summit in Italy shortly after it happened, captioning the post, “What is Biden doing?” The RNC’s post was then shared by right-leaning media outlets — among them, Sinclair Broadcast Group syndicated stations and the New York Post, which embedded the RNC’s post in its story.

This clip was also picked up by publications abroad, including the tabloid The Sun in the U.K. and the newspaper Corriere della Sera in Italy. A pro-Trump super PAC highlighted the latter coverage on social media as proof that “the world is laughing at us.” Joshua Tucker, a politics professor and co-director of the Center for Social Media and Politics at New York University, said that Republicans will likely run aggressively on concerns about Mr. Biden’s age, but they should expect Democrats to strike back at Mr. Trump, who is only a few years younger.

“Given some of Trump’s behaviour of late, the RNC is playing with fire a little bit here,” Mr. Tucker said.

Mr. Biden’s campaign has begun reciprocating with attacks on Mr. Trump through its rapid response account on the social media platform X. On Thursday, it posted a montage of clips it claimed showed Mr. Trump “getting confused, lost, wandering off, and waving to nobody.” The out-of-context post followed other left-wing efforts to use videos to paint Mr. Trump as confused, senile or attention seeking.

For example, social media users earlier this month used an image of Mr. Trump holding Donald Trump Jr.’s hand at a rally last fall in Hialeah, Florida, as alleged proof that the former president needed to be escorted offstage. The original video captured the moment in full context, showing the father and son only briefly clasped hands in a greeting as Mr. Trump departed without help.

The fact that these images and videos have only simple edits or are misrepresented, rather than manipulated with editing software or artificial intelligence, gives them even more power in a moment when Americans are concerned about high-tech fakes, experts said.

“It’s persuasive because it’s not fabricated,” Mr. Nisbet said. “It’s simply distorted visual cues to create a false impression about what happened.” At the debate next week — the first this cycle between the two leading candidates for president — both Mr. Trump and Mr. Biden will face pressure to show they remain healthy, sharp and fit to be president.

Both men have made public verbal gaffes, flubbing names, dates or facts. Health experts caution that such mix-ups can be common and exacerbated by stress. They also point out some cognitive ageing is normal, including delay in memory retrieval. And Mr. Biden has fought a stutter since childhood, a challenge that critics have seized on to attack and ridicule him.

Experts agree that most voters are unlikely to switch candidates based on misleading videos, but they said such misinformation could further entrench people in their beliefs or dampen their enthusiasm to participate in the political process.

“This election will not be about persuasion,” said Mr. Nisbet. “It’s about mobilising — the Democrats mobilising Democratic and Democratic-leaning voters, Mr. Trump and Republicans doing the same. And it’s going to be a close election.”