Washington, DC has reached a settlement with a viral protester arrested in the capital for playing the Star Wars soundtrack near National Guard troops during a crackdown on illegal immigration.

The case stems from an incident in September last year, when Sam O’Hara, a 35-year-old DC resident, protested the troop deployment by filming Ohio National Guard members from a distance while playing Darth Vader’s Imperial March from his phone.

O’Hara said he chose the soundtrack as a humorous way to protest what he viewed as the militarization of the capital, comparing the guardsmen to Stormtroopers and telling the Associated Press that he felt like he was “living in a Star Wars episode or movie.”

O’Hara, represented by the American Civil Liberties Union (ACLU), sued the city, four Metropolitan Police Department officers, and an Ohio National Guard sergeant who called police to the scene.

The activist argued that he was not interfering with the troops when he was handcuffed by officers for 15 to 20 minutes after Ohio National Guard Sergeant Devon Beck called police to “handle” him. He was released without charges and continued his protest.

The complaint alleged violations of his First Amendment right to free speech and Fourth Amendment protections against unreasonable seizures and excessive force, and sought unspecified compensatory and punitive damages.

On Thursday, the ACLU filed a notice in federal court saying Washington, DC officials had agreed to pay the plaintiff an undisclosed sum, describing it as “a significant amount.” O’Hara agreed to drop his claims against the city and the police, but not against Beck.

“Our right to free speech grants us the freedom to criticize the government. Government officials don’t have to like it, but they can’t punish someone for their speech,” Scott Michelman, legal director of the ACLU’s Washington, DC chapter, said.

The Metropolitan Police Department said in a statement that it “recognizes the importance of upholding First Amendment rights of individuals to peacefully express their views,” adding that “the incident was referred to MPD’s Internal Affairs Bureau.”

US President Donald Trump deployed more than 2,300 National Guard troops from eight states and the District of Columbia, alongside hundreds of federal agents, as part of his campaign to deport as many illegal immigrants as possible. Civil rights groups and local officials denounced the move as an abuse of power.

The deployment of federal troops led to standoffs with protesters in several states. In January, federal agents killed two US citizens during separate altercations in Minnesota, prompting further criticism of Trump’s immigration policies. Following the backlash, Trump fired US Homeland Security Secretary Kristi Noem, while acting Immigration and Customs Enforcement (ICE) Director Todd Lyons resigned.