Flag of the Russian Soviet Federative Socialist Republic - Wikipedia

Transcaucasian Soviet Federative Socialist Republic, VexiWiki

Russian Tsardom, The Countries Wiki

Red flag (politics) - Wikiwand

File:Flag of Donetsk People's Republic.svg - Wikipedia

File:Flag of Karakalpak ASSR (1934-1937).svg - Wikipedia

File:Russia, Flag of Federal agency on state reserves, 2006.png - Wikipedia

Flag of Udmurtia - Wikiwand

Flag of the Russian People's Government, a provisional government installed after the fall of the Putin Regime : r/vexillology

Communist Symbolism: Hammer and sickle, Workers' Party of Korea, Red star, Russian Soviet Federative Socialist Republic, May Day, Paris Commune, Red flag, Raised fist : Miller, Frederic P., Vandome, Agnes F., McBrewster

File:Flag of Russia (1991–1993).svg - Wikipedia

File:Flag of Moscow oblast.svg - Wikimedia Commons

File:Flag of the fictional Belgorod People's Republic.svg - Wikipedia