Cops arrest girl who attacked teen holding infant -- but only after disturbing video posted on Facebook
Teen and infant attacked (KSLA)

A disturbing video is doing the rounds online in which a group of teenage girls can be seen attacking a 16-year-old and her six-month-old baby. In relation to the case, a teenage girl, who was part of the group that brutally attacked Janie McCoy and her child, was taken into custody on Tuesday, CBS-affiliated news station…