Video shows NYPD grabbing child from mum

Police are investigating an incident in which officers grabbed a baby from a mother during her arrest.

The video, shared on Facebook on Friday, shows police dragging 23-year-old Jazmine Headley across a floor as she yells: "They're hurting my son."

She was arrested for refusing to leave a social services centre, police say.

City public officials have condemned the actions and demanded answers from the police department.