Boston Marathon Bombing (2013)
Nanjing Massacre (1937)
Vladimir Lenin's Death and Aftermath (1924)
The Halifax Explosion (1917)
Vargas Tragedy Landslide (1955)
Black Saturday Bushfires (2009)
COVID-19 Second Wave Crisis (2021)
Plaza de Mayo Massacre (1955)
Semipalatinsk Nuclear Testing Impact
Algerian War of Independence Casualties