An allegedly drunk state judge, after bragging that he was a homicidal menace, sucker-punched a Legal Aid lawyer — and left the man lying unconscious on a Chelsea sidewalk, according to cops and witnesses. Robert Beltrani, 53, an administrative law judge with the state Department of Parole, fled the scene in his car after the Oct. 20 beatdown following a nearby party, cops said. “I f---ing kill people.” 
 
 Brooklyn judge in hot water for hurling threat at prosecutor 
 
 Roberts, 48, suffered a black eye and a separated shoulder when he hit the ground after taking a pair of unexpected blows to the head from the beefy Beltrani. Robert Beltrani, 53, was before a Manhattan Criminal Court judge for the first time since the boozy Oct. 20 incident on W. 18th St. in Chelsea. Drunken judge sucker-punches Legal Aid lawyer after party 
 
 Roberts was knocked out and suffered a separated shoulder, torn labrum, black eye and other injuries after a brief exchange with Beltrani, who was visibly drunk, according to witnesses. (Alec Tabak for New York Daily News) 
 
 The judge allegedly socked Roberts — who was walking in front of him — as the attorney turned away from Beltrani following a brief verbal encounter. “I do justice and I f---ing kill people!” 
 
 Beltrani, who oversees state parole cases at the Rikers Island jail complex, was placed on administrative leave following the incident. He didn’t remain at the scene, authorities said, and later received a desk appearance ticket ordering him to appear in court Tuesday. He was hit with misdemeanor assault, attempted assault and harassment raps for the altercation in Chelsea with lawyer Sam Roberts. “He was saying things like you could learn a lot from me, you better watch out, don’t disrespect me.” 
 
 As Roberts, 48, was leaving the event, Beltrani showed up itching for a fight, the lawyer said. “Watch out.” 
 
 Sign up for BREAKING NEWS Emails privacy policy Thanks for subscribing!
– A party in October ended with a Legal Aid lawyer lying unconscious on a New York City sidewalk, and on Tuesday, a state parole judge who handles Rikers Island cases was charged with misdemeanor assault and harassment in the case, the New York Daily News reports. Robert Beltrani, 53, was said to be at the same Oct. 20 party as attorney Sam Roberts, 48, per the New York Post, and an allegedly intoxicated Beltrani reportedly said some inflammatory words to Roberts just after 11:30 that night as they stood outside the venue. "Yeah, I'm the judge," Beltrani said, per the complaint against him. "I do justice and I f---ing kill people!" Beltrani then allegedly sucker-punched Roberts as he tried to walk away, then fell on top of him on the sidewalk. Roberts was knocked out and suffered a separated shoulder, a black eye, and other injuries. He told the Daily News in October that Beltrani just didn't seem to like him after they were introduced, that he tried to disengage and may have been impolite to Beltrani, and that at one point the judge warned him, "Don't disrespect me. Watch out." The Post, which noted Beltrani showed up to court Tuesday with a "quarter-size lump on his forehead," adds that he left the courtroom without comment, "[mumbling] profanities under his breath." He was released without bail; Roberts received an order of protection against him. (An Iowa man died over the summer after being sucker-punched.)