The young Brooklyn mother whose 1-year-old was ripped from her arms by NYPD officers at a benefits center is suing the city over the disturbing scuffle that was caught on video.

In her excessive-force complaint filed Wednesday in Brooklyn federal court, Jazmine Headley, 24, said she and her infant son, D.B., became victims of a “torrent of violence and abuse” at the Human Resources Administration office in December.

The single mom was sitting on the floor while waiting for three hours in hopes of finding out why her child care benefit was cut off.

“By the end of the day, Ms. Headley had been humiliated, assaulted, physically injured, threatened with a taser, brutally separated from her son, handcuffed, arrested, and jailed — all by employees of the City of New York,” the suit said.

She said the situation escalated when, “in a disproportionate response,” HRA officers ordered Headley, whose son was in the stroller at the time, to get up and leave — before calling the cops.

“This woman is trespassing, and she needs to be removed and she’s belligerent,” HRA peace officer Bettina Barnett-Weekes told police when they arrived, according to court papers.

Standing up, Headley asked to speak to a supervisor and picked up her son, who was reaching for her.

“If you don’t go, you’re going to arrested,” Barnett-Weekes allegedly threatened the mom. “And if you get arrested, your kid goes to ACS.”

Headley said she began to step away with D.B. in her arms when Barnett-Weekes “made a swift and aggressive grab” on her shoulder, shouting, “Grab the baby, grab her!”

“As Ms. Headley walked away, HRA and NYPD officers grabbed her, yanked at D.B.’s limbs, brandished a Taser inches from their faces, and took D.B. away from her in a chaotic and terrifying public display of excessive force,” the suit alleged.

Headley is suing for false arrest and malicious prosecution — saying she was locked up on Rikers Island for several nights and separated from her only child on charges of obstructing governmental administration, resisting arrest, endangering the welfare of a child and trespassing. The charges were eventually dismissed.

“It was the first time Ms. Headley had been away from D.B. for even one night,” the suit said of Headley’s time behind bars. “Ms. Headley also was beginning to transition out of breastfeeding. The separation disrupted that natural process.”

Headley claimed her son “endured a formative incident of trauma” and “will forever confront increased long-term health and life consequences as a result.”

She also accused the city of failing to adequately train HRA peace officers and NYPD officers in “child-sensitive arrest policies, thereby permitting the NYPD to arrest parents while they are in front of their children in ways that inflict maximum trauma on children.”

“Ms. Headley refused to be demeaned by HRA officers just because she needed help. What followed was a shameful display of violence and punishment,” said one of her lawyers, Katie Rosenfeld, in a statement. “But this incident caught the attention of millions because many of us recognized ourselves in Ms. Headley. Her deep love for her son, her struggles as her family’s breadwinner, and her dignity in the face of adversity resonate with New Yorkers and people around the world.”

A spokesman for the city’s Law Department said it was reviewing the complaint.

Isaac McGinn, a spokesman for the Department of Social Services, said he couldn’t comment on pending litigation.

“Last year’s incident involving Ms. Headley painfully illustrated that more has to be done to improve the client experience in our centers,” he said. “That’s why we’ve implemented and continue to implement systematic changes, including retraining all security staff with an emphasis on de-escalation techniques, requiring implicit bias training for all DSS staff, and putting new response protocols in place with the NYPD, to prevent incidents like this one from happening again.”

Barnett-Weekes could not be reached.