A lawsuit filed by Dennis Marx against the Forsyth County Sheriff’s Office might shed some insight into his rationale for targeting the criminal justice system, with the complaint and subsequent motions reading as a manifesto of sorts against the agency and systems at large in some instances. Marx, 48, of Cumming, was identified as the heavily armed gunman who shot a veteran sheriff’s deputy in the leg Friday morning outside the Forsyth County Courthouse. He was in turn shot and killed by other deputies at the scene, Forsyth County Sheriff Duane Piper said.