(Reuters) - Actor Shia LaBeouf was arrested early on Thursday after a scuffle outside a New York museum where he was chanting “He will not divide us” during a live-streamed protest against President Donald Trump, police said.

The “Transformers” and “American Honey” star allegedly pulled a 25-year-old man’s scarf, scratched his face and shoved him at about 12:30 a.m. EST outside the Museum of the Moving Image in the borough of Queens, a police spokesman said.

The cause of the altercation was unknown. The 30-year-old actor was chanting “He will not divide us” into a live-stream camera mounted on a wall when the incident took place.

LaBeouf and two other artists began the protest on Jan. 20, the day that Trump, a Republican, was inaugurated as the 45th president of the United States. They have invited the public to repeat the words into the camera nonstop for the next four years in a “participatory performance,” according to their website.

LaBeouf was released after being charged with misdemeanor assault and harassment, the police spokesman said. He is scheduled to appear in court on April 4.

Representatives for LaBeouf did immediately respond to a request for comment.