ORANGE COUNTY, Fla. – Attorneys representing the parents of Salaythis Melvin, a 22-year-old man fatally shot in the back by an Orange County deputy in plain clothes, are demanding Sheriff John Mina make immediate policy changes to the department’s use of force policy.Lawyers Bradley Laurent and Carlus Haynes spoke to reporters Wednesday the morning after Mina won the primary election for a chance to serve a second term as sheriff and the body camera video of Melvin’s shooting was released.The attorneys said they plan to file a civil lawsuit against the sheriff and the department for wrongful death.Orange County Sheriff’s Office Agent James Montiel opened fire on Salaythis Melvin on Aug.