The NYPD is lying about the death of a young man and the near-fatal injuries to another who were mowed down by a squad car in October, a witness told the Daily News.Cops said Ronald Herrera, 20, who died a week after the Oct. 27 Bronx motorcycle accident, and his now-paralyzed passenger, Leonel Cuevas, 17, were aboard Herrera’s Kawasaki off-roader when it “attempted to overtake” the cop car while zooming down Walton Ave.The dirt bike then ricocheted into a double-parked car as the cop plowed into a second parked car, the police account said. But a witness to the bloodbath on Walton Ave. told www.nydailynews.com/cops-dirt-bike-crash-story-bogus-witness police story is false.“They hit the dirt bike from behind, the bike twisted and Leonel flew off,” said the 18-year-old witness, who asked to remain anonymous.“It (the bike) went down and Ronald was still holding on,” added the witness, who was on another off-road motorcycle. “It started throwing sparks. The police car completely ran over him. They really didn’t have to crash him off the bike.”