Eight people have been killed in vigilante lynchings in Bangladesh sparked by rumours on social media of children being kidnapped and sacrificed as offerings for the construction of a mega-bridge, police said Wednesday. The victims — which include two women — were targeted by angry mobs over the rumours, spread mostly on Facebook, that said human heads were required for the massive $3 billion project, police chief Javed Patwary said. More than 30 other people have been attacked in connection with the rumours.