Shia LaBeouf was arrested during his livestreamed anti-Trump protest early Thursday morning at the Museum of the Moving Image in Queens, New York. The actor and performance artist was charged with misdemeanor assault.

LaBeouf, 30, was continuing his four-year protest called “He will not divide us,” which began Friday when Donald Trump was sworn in as the 45th U.S. president, when he was taken by police officers following an argument outside the museum.

The actor quarrelled with an unnamed 25-year-old man at around 12:35 a.m. EST, said police. The authorities said the altercation had nothing to do with Trump, according to a report from NBC. The squabble, which occurred off-camera, involved LaBeouf scratching the man’s face after grabbing his scarf, according to police. It was also said that the actor pushed the man.

LaBeouf’s fellow protesters said the actor “protected” them, reported TMZ. “Shia took a hit for us. There were all these Nazis here, he came out and tried to protect us,” claimed one witness.

This was not the first time that an altercation involving the actor took place during his protest, where people are invited to say the words “He will not divide us” to a live-streaming camera placed outside the museum.

During the weekend, while LaBeouf and fellow protesters were chanting, a man approached the camera and said, “We must secure the existence of white people.” The actor then interrupted the man and said, “He will not divide us.”

It got to a point where the actor was screaming the chant to the man’s face. The whole incident was broadcasted live.