Just two days into his four-year protest of Donald Trump, the 30-year-old actor was captured screaming "He will not divide us" at a man outside Manhattan's Museum of the Moving Image.
"We must secure the existence of white people," the man – who could potentially have been working with LaBeouf – preached into the camera, prompting an angered response from the Transformers star.
"He will not divide us," he snapped into the man's ear, just days after he tried to punch a man who was holding a "Pepe 2020" sign at the camera.
MUSEUM OF THE MOVING IMAGE
Shia LaBeouf was filmed shouting in the ear of a 'white supremacist' yesterday
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MUSEUM OF MOVING IMAGES
It is unknown whether the man was a protester or a character in Shia's project
He will not divide us!
Again it was uncertain as to whether or not the man was a protester or merely a character in LeBeouf's project.
The American Honey star has been trolled by a number of people at his protest site over the course of the weekend.
One man – who visited during the early hours of Monday morning – even went as far as to shout "Hitler did nothing wrong" numerous times into the camera located onsite.
PROTESTS at Trump's Inauguration Day
Fri, January 20, 2017
Protestors were chased through the streets of Washington as violent scenes broke out close to the Donald Trump inauguration in Washington.
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Police and demonstrators clash in downtown Washington after a limo was set on fire.
MUSUEM OF MOVING IMAGES
Large crowds have gathered at the protest which is set to last four years
MUSEUM OF MOVING IMAGES
One man appeared to intercept after things got a little too heated between Shia and the man
LaBeouf has been a permanent fixture at the site every day since it launched on Friday.
Announcing his plans to launch the protest last Friday, he wrote: "Commencing at 9am on January 20, 2017, the day of the inauguration of the 45th President of the United States, the public is invited to deliver the words "HE WILL NOT DIVIDE US" into a camera mounted on a wall outside the Museum of the Moving Image, New York, repeating the phrase as many times, and for as long as they wish.
"In this way, the mantra "HE WILL NOT DIVIDE US" acts as a show of resistance or insistence, opposition or optimism, guided by the spirit of each individual participant and the community."