The parents of children killed in a shooting at a private Christian school in Nashville are fighting to keep police investigative records a secret. The Covenant School parents say releasing the documents would be traumatic for the families and could inspire copycat attacks. In a Tennessee appeals court on Thursday, their attorneys will defend a lower court ruling that determined the shooter’s writings and other documents are protected by federal copyright law and cannot be released under the Tennessee Public Records Act. Meanwhile, a coalition including a state senator, media outlets, and a gun rights group are seeking to have the ruling overturned.