How can we prevent murderous schoolyard violence in children who have access to weapons, poor parental supervision, and a mean streak?

我们怎样才能防止校园暴力发生在那些有武器、父母监督不力、行为卑劣的孩子身上呢？

youdao

"A combination of flawed management information and poor communication with applicants and staff mean that G4S senior management had no idea how badly wrong their operation was going until it was too late to retrieve it, " the report said.

WSJ: Social Media