Massacre (noun)

The unnecessary, indiscriminate killing of a large number of human beings or animals.

Origin:

French, from old french macacre, from macer to crush, maim, from vulgar latin *mattāre, frequentative of latin mattus maimed, from greek mattos maimed, of a maimed god.

Examples:

1. The government's military operation was criticized for being a massacre of innocent civilians.
2. The massacre at the school was a tragic and senseless act of violence.
3. The villagers were massacred by the invading army.
4. The company's decision to close the factory was a economic massacre for the workers.
5. The massacre of the whale population by the commercial fishing industry is unsustainable.