2021 mass murders

suicide bombing in Afghanistan

May 2021 mass shooting in Russia

2021 mass stabbing in Norway

terrorist attack

string of shootings in Atlanta, Georgia, United States

2021 mass murder in Russia

17 December 2021 fire in Kita-ku, Osaka City, Japan

suicide bombing in Kunduz, Afghanistan

terrorist attack in Baghdad

2021 vehicular mass murder in Wisconsin

suicide bombing in Kandahar, Afghanistan

Ongoing battle between Mozambican security forces and Islamist militants over the control of the city of Palma

mass shooting in Indianapolis, Indiana

mass stabbing attack in Würzburg, Germany

confrontation on 6 May 2021 where at least 29 people were killed in a shootout between police and drug traffickers

2021 killing in Canada

fatal incident in Plymouth, United Kingdom in August 2021

airstrike occurred in Togoga, Tigray Region on 22 June 2021

2021 massacre in India

terrorist attack in Pakistan

Durga idol vandalism and violence in Bangladesh

mass shooting at a rail yard in San Jose, California, United States, on May 26, 2021; the deadliest mass shooting in San Francisco Bay Area history

suicide attack on restaurant in Somalia

terrorist attack in Pakistan

2021 bombing in Guangzhou

massacre in Penitenciaría del Litoral in September 2021

Burkinese terrorist attack

Massacre in Ecuadorian prisons in February 2021