Thuggist students in a secondary school in northern Taiwan were making death threats against the teachers. When a teacher stepped in to try to stop a fight between two parties, the male student railed at him, saying “I will bring a gun to kill all of you!”
The teachers accused the principal of doing nothing to safeguard their safety as well as that of innocent students against roguish students who had threatened to kill them with guns. When the gun threats were brought to the attention of the police, they were indifferent. It cause the teachers to suspect there was collusion to cover up the case to protect the reputation of the school principal.
64 teachers petition and as a result the principal was sacked.
The moral of the story: Do not allow the thugs to overrun the school. Together you can do something even if the principal and the police are not helpful.

