NYPD cops and Black Lives Matter protesters finally found something they could agree on — neither side wants to see Mayor Bill de Blasio elected president.

Members of the NYPD Police Benevolent Association and the anti-cop activist group stood shoulder-to-shoulder in Times Square on Thursday morning to protest de Blasio’s White House campaign-kickoff interview on ABC’s “Good Morning America.”

The strange bedfellows joined together to chant “Liar!” and “Can’t run the city! Can’t run the country!” so loudly that the racket penetrated the full-length windows of GMA’s ground-floor studio, forcing host George Stephanopoulos to acknowledge the demonstration on air.

Some of the roughly two dozen cops held signs saying “Mayor Bill de Blasio is no ‘friend of labor’ ” and others wore orange foam hands with the word “LIAR” printed on the extended middle fingers.

About 10 Black Lives Matter activists held their group’s red-black-and-green signs, while Hawk Newsome, president of Black Lives Matter of Greater New York, held a hand-lettered message that said, “NO! DE BLASIO He Failed Black NYC!”

Other protesters in the crowd of about 60 included members of the East Brooklyn Congregations community organization, whose signs accused de Blasio of “Stealing from Seniors.”

Black Lives Matter was founded in 2013 following the acquittal of George Zimmerman in the fatal shooting of Trayvon Martin, and its members have since staged numerous protests around the country, often over police shootings of African Americans.

Following the GMA interview, de Blasio and first lady Chirlane McCray were driven off in a black minivan that was briefly blocked by Newsome, who stood in the street and held up his front of the Chrysler Pacifica.