Military and law enforcement personnel are urged to watch what they post on social media.
Boston Police Commissioner William Evans said officers approached a vehicle in Roxbury without guns drawn when Angelo West shot Officer John Moynihan at point blank range in the face.
An early morning Friday shooting left one woman injured.
A man was killed in a shooting near the Boston Waterfront on Sunday morning.
Two people were killed and a third was wounded in a shooting in Boston’s South End early Monday morning.
Two people have been arrested in connection with a fatal shooting inside a parking garage in Boston on Tuesday night.