A Knox County Republican political operative and county employee resigned Thursday, saying he has been harassed by county law enforcement officers and become an enemy of the now-former chairman of the local party. In a lengthy e-mail to Knox County Mayor Mike Ragsdale, Tyler Harber, 24, accused the Knox County Sheriff's Office of "vengeful and illegal actions" in recent days. "Last night, after I was followed by undercover officers and then forcefully removed from my vehicle, I was handcuffed and confined in the back of a Knox County Sheriff's vehicle, officers refused to show proper identification, read me my rights,...