Last year in Nova Scotia, after 3-year-old Dylan Ehler vanished, online sleuths descended on Facebook groups to help find him. Then they lost their way.
via WIRED: https://www.wired.com/story/search-missing-boy-dylan-ehler-nova-scotia/
The vitriol spilled over into real life. People started standing outside their Bible Hill home glowering and taking photos, or following them in their cars. Someone at the area hospital looked up health records for Ashley, Lily, and Dylan, a privacy breach. When Jason and Ashley put up a memorial for Dylan in Bible Hill’s Holy Well Park—a blanket laden with teddy bears, a toy fishing rod, the boy’s first-ever pair of rain boots hanging from the tree overhead—locals tore it apart and dug a hole beneath it, looking for bones.