SUNBURY, Pa. — I’ve only murdered bad people — dozens of them — accused Craigslist thrill killer Miranda Barbour said in a jailhouse interview Friday. “When I hit 22 [murders], I stopped counting,” the teen terror said, claiming she began her killing spree as a 12-year-old runaway caught up in a Satanic cult in her home state of Alaska — and just kept on killing. “It was never random,” she said. “When I found out they were bad people, they don’t need to be here anymore.”