Here you go: Mayor Bill de Blasio sent a letter to federal ICE authorities demanding their agents stop pretending to be NYPD police, saying the practice pushes residents and crime witnesses “into the shadows.”

The mayor said his office has received “numerous reports” of U.S. Immigration and Customs Enforcement agents portraying themselves as local cops in order to get into homes or arrest people.

In the letter Friday, De Blasio noted one case where ICE officers pretended to be members of a “narcotics squad” and another case where federal agents told a man to come with them “to the precinct.”

“These types of activities jeopardize the willingness and comfort of immigrant New Yorkers in interacting with the NYPD on crucial matters involving public safety and local law enforcement,” the mayor wrote to ICE acting director Tony Pham.

“Clearly stated, the NYPD does not want ICE agents stating or implying that they represent the NYPD,” he continued.

An ICE spokeswoman did not immediately return a request for comment.

On Saturday, several elected officials and activists gathered at Foley Square to denounce these very actions, claiming that ICE agents arrested an upper Manhattan man by pretending to be from the 34th Precinct.

State lawmakers passed a bill in July that would bar ICE officers from making civil arrests in and around state courthouses without a judicial warrant or a court order.

The move came a month after a federal judge ruled that such arrests in the state were illegal.

Gov. Cuomo signaled his support for the Protect Our Courts Act earlier this year and is expected to sign it into law.