A mass shooting includes incidents of multiple victims (4+) killed by shooting in war crimes, executions, genocide, or ethnic cleansing.

Soviet/Russian regimes (WWII-present) committed thousands of such acts via NKVD/Red Army (1939-1991) and Russian forces post-1991, targeting Poles, Ukrainians, Chechens, Balts, and others. Exact counts are hard due to hidden records, but estimates: 1,000-2,000+ incidents, 500,000-1M+ victims from direct shootings (excluding famine/Gulag deaths).

Peak periods: 1940 (Katyn/political executions), 1941 (prison massacres), 1944 (deportations), 1990s-2000s (Chechnya), 2022+ (Ukraine invasion).

By Period:

- 1939-1940: ~100-200 incidents (Polish operations, early purges). Victims: ~150,000 (incl. Katyn ~22,000).

- 1941: ~200-400 incidents (NKVD prison massacres during retreat). Victims: ~50,000-100,000 across Ukraine, Belarus, Baltics.

- 1942-1945: ~100-200 incidents (deportations like Chechens/Crimean Tatars; some shootings). Victims: tens of thousands.

- Post-1953: Fewer large-scale until 1990s.

- 1994-2009 (Chechen wars): ~300-500 incidents (village cleansings like Samashki, Novye Aldi). Victims: ~50,000-100,000 civilians.

- 2022-2025 (Ukraine): ~500-1,000+ incidents (Bucha, Izium executions). Victims: ~10,000-20,000 documented civilian shootings.

By Country:

- Poland: ~50-100 sites (Katyn + others, 1940). ~22,000 victims.

- Ukraine: ~500-800 incidents (1941 prisons, 2022+ occupation). Highest victims: hundreds of thousands historical + thousands recent (Bucha ~73-500, Izium ~400+ graves).

- Belarus: ~100-200 (Kurapaty, prisons).

- Baltics: ~50-100 (1941 massacres).

- Chechnya/Russia: ~500+ (wars, deportations like Khaibakh ~700 burned/shot).

- Others (Crimea, Kazakhstan): Shootings during deportations.

These are conservative; many undocumented. Sources: UN OHCHR, HRW, Memorial, historical archives.

History repeats: Brutal repressions from Stalin to today. Never forget the victims. #Holodomor #Katyn #Bucha #Chechnya #WarCrimes