English Active shooter Cited by user 2600:1700:9DD0:3130:7D33:A1C6:F220:84D8 on 26 Jun 2023 Active shooter or active killer describes the perpetrator of a type of mass murder marked by rapidity, scale, randomness, and often suicide.
English Mass murder Cited by user 2600:1700:9DD0:3130:D0B3:5899:2AFC:5F3E on 15 May 2023 Mass murder is the act of murdering a number of people, typically simultaneously or over a relatively short period of time and in close geographic proximity.
English Mass killing Cited by user 2600:1700:9DD0:3130:AED2:5D4F:DE87:4E2D on 30 Apr 2023 Mass killing is a concept which has been proposed by genocide scholars who wish to define incidents of non-combat killing which are perpetrated by a government or a state.
English List of mass shootings in the United States in 2023 Cited by user Ionmars10 on 01 Jan 2023 This is a list of shootings in the United States that have occurred in 2023. Mass shootings are incidents involving several victims of firearm-related violence.