A trio of New Yorkers are asking a federal court to stop the government from testing an alert system that they say would allow President Trump or his successors in the White House to turn people’s cellphones into a loudspeaker for the administration’s propaganda.

The complaint filed last week in Manhattan federal court seeks to halt the testing planned for Wednesday because it violates people’s constitutional rights by allowing the government to seize their electronic devices and distribute messages that could contain “disinformation, subjective opinions and biased characterizations.”

“The Presidential Alert system, which is compulsory and cannot be opted out of, violates these rights because it is tantamount to hijacking private property for the purpose of planting a Government-controlled loudspeaker in the home and on the person of every American,” the complaint filed last Wednesday by Jason Nicholas, Kristine Rakowsky and Liane Nikitovich says.

It goes on to note Trump’s consistent use of social media, saying he’s used it in his “rise to power by weaponized disinformation that he broadcast into the public sphere via Twitter, in addition to traditional mass media.”

“He ordinarily Tweets several times a day, at all hours, including late at night and early in the morning,” according to the complaint, which was first reported by Politico.

Cellphone users can opt out of most alerts through the Integrated National Public Warning System, which the Federal Emergency Management Agency uses to transmit the messages, but presidential alerts will be mandatory.

Asked about the possibility that the government’s messages could pour into people’s phones like Trump’s tweets, FEMA official Antwane Johnson said that wouldn’t happen.

“No, not at all. One thing that we need make very clear is that there are laws, policies and procedures that are in place, other protocols to assure that the system is used in accordance with its intended use as defined by the law,” he told CBS News in an interview on Tuesday.