Man caught on video sucker-punching strangersPolice in Cambridge are looking for a man who sucker punched two strangers as they walked along Massachusetts Avenue over the weekend.Anyone with information about the incident is asked to contact the Cambridge Police Department at 617-349-3300A furniture store’s surveillance camera captured video of the man throwing the punch Saturday afternoon as a couple who just left the store began walking down the sidewalk. The video shows a man coming up from behind the couple, winding up and hitting a man in the side of his head, knocking him to the ground. A store employee runs out of the store and helps the man.Anthony Goodh, owner of the furniture store BoCocept, said he was glad his store’s camera recorded the attack and hopes police can catch the suspect. He called the attack “cowardly.”“It’s terrible. You get paranoid and start looking over your shoulder to see who is coming from behind,” Goodh said. “I hope they identify this person. If he can’t decide for himself that he’s doing something wrong, he’s got to be told so.”Cambridge police said two other men were also punched by the same suspect as they walked along Massachusetts Avenue at about the same time Saturday afternoon.While the video and attack seem similar to a phenomenon known as the “knockout game,” in which assailants punch unsuspecting pedestrians for an audience or to post a video online, Cambridge police said they do not believe these attacks are part of that game.A Cambridge police spokesman said the situation appears to instead be a case of a person who was either under the influence or suffering from mental illness.No arrests have been made as of Monday morning. Police are investigating.Video credit: Anthony Goodh, owner of BoCocept