At least four MTA workers were injured in a series of recent assaults across New York City, as violent passengers lashed out using wrenches, fists, and kicks, according to police and sources.Strangely, three of them were attacked within 12 hours. It seems that there is a rage against the MIT employees or something else.The violence escalated on May 30, when shortly after midnight, a 68-year-old MTA cleaner was targeted at the Bergen Street F and G station in Boerum Hill. He saw a man swinging a pipe at intercom kiosks and attempted to intervene. The man responded by punching the cleaner in the chest after missing him with the pipe. The suspect, dressed in all black and carrying a backpack, fled the scene.Later that day, at around 5.30 PM, a 38-year-old Staten Island bus driver was assaulted in Port Richmond. A masked man threw a cup of hot liquid at the driver at Innis Street and Nicholas Avenue. The driver was hospitalized at Richmond University Medical Center and is in stable condition. The suspect, still on the run, wore a beige hoodie and a black face mask.Around 11.30 PM, a 53-year-old MTA conductor was clearing an M train at the Delancey-Essex Street station when she was kicked in the stomach by a sleeping passenger she tried to wake. The man, described as Hispanic, about 6 feet tall and in his 30s, fled the scene. He was last seen wearing a black and white hoodie. The conductor was treated for minor injuries at Bellevue Hospital.The first incident took place on May 13, when a man armed with a wrench assaulted a 71-year-old bus driver aboard a B61 bus in Red Hook. The attacker, allegedly called in by a female passenger after a dispute with the driver, struck the victim in the forehead at Lorraine and Hicks streets around 8 AM. The two suspects fled together after the assault. The suspect is described as a dark-complexioned man, around 5-foot-6 and in his early 40s, last seen wearing a black sweatshirt and tan pants.All four suspects remain at large as police continue their investigations.