A 12-year-old suspect, just arrested for murder, is marched, shirtless and in cuffs, to a waiting car. A second suspect, 17, gets the same treatment. The two “perp walks” were videotaped by Florida’s Marion County Sheriff’s Department and posted on Facebook. The pair were charged with the slaying of three teens at Ocala National Forest. The killings spread fear in the Orlando area that a serial killer was on the loose.