Milwaukee police are reviewing an arrest during an Oct. 8 traffic stop in the Harambee neighborhood, where cellphone video appears to show officers striking a handcuffed man on the ground near Palmer Street and Keefe Avenue. The department said it was aware of video circulating on social media and acknowledged community concern. It has not provided further details about the review or answered follow-up questions, according to the information available Tuesday. Police said officers stopped a car over a license-plate violation and saw a gun in a passenger’s pocket. The man, identified by his attorney as 24-year-old Nicholas Beamon, appears in video struggling with officers. Police said he was armed and not following commands; the video appears to show two officers striking his head as a third officer moves in. B’Ivory LaMarr, Beamon’s attorney, called the force excessive and said Beamon told officers he had a firearm. LaMarr said he believes Beamon possessed the gun legally and wants police to release body-camera footage to clarify how officers removed the occupants from the vehicle and what happened during the arrest. The Milwaukee Police Association defended the officers. Its president, Alex Ayala, said officers knew a concealed firearm was in the front pocket of Beamon’s sweatshirt and that it remained close enough to pose a danger while he struggled. Ayala characterized the blows as “controlled strikes,” a tactic taught at the police academy, and said they stopped when Beamon complied. Beamon was arrested and released; he has not been criminally charged. The 20-year-old driver remains in custody, with jail records indicating allegations of battering an officer and resisting arrest. The department’s review comes amid sharply differing accounts of the force used and the threat officers faced. Police have not released body-camera footage or publicly detailed the review’s scope.