The word "massacre" refers to a brutal and violent act where a large number of people are killed or harmed, often without mercy or reason. Full definition
I imagine by year's end we'll see some sort of massacre of that sort. (kuriousity.ca)
It will be massacre at the games for them. (justarsenal.com)
The extraordinary public exchange with the president gave voice to an intensely emotional debate over how to respond to the latest gun massacre in an American school. (nytimes.com)