Police officer David Moore is pictured wearing a body camera in Ipswich, Mass., on Dec. 1, 2020. The city was among 25 statewide awarded grants to purchase body-worn cameras for videotaping interactions with the public. A new study says the benefits to society and police departments outweigh the costs of the cameras.

IPSWICH – DECEMBER 1: Ipswich police officer David Moore is pictured wearing a body camera in Ipswich, MA on Dec. 1, 2020. Ipswich was among 25 statewide awarded grants to purchase body-worn cameras for videotaping interactions with the public. (Photo by Jim Davis/The Boston Globe via Getty Images)