Tankies always seem to get a pass due to ignorance. People are better informed about Nazi Germany but significantly less so about The Great Leap Forward (Maoist policies) and the USSR (Stalin/Marxist-Leninist policies).
Let's play a fun little game of "Which genocidal fascists is worse?" to see how hyperbolic I was being. Shall we?!
Nazis: Fascists who are directly responsible for the deaths of an estimated 12,000,000 people. Deny a genocide ever took place despite evidence to the contrary (Holocaust). Antisemites who forced minority ethnic groups to work in forced concentration and labor camps and starved them to death. These concentration camps began in 1933 and ended in 1945 lasting for a period of 12~ years. Had a secret police known as the Geheime Staatspolizei (Gestapo) whose job it was largely to suppress political opposition by any means necessary including execution of dissenters and spy on behalf of the Nazi party. Torture and execution were common - including that of women and children.
Tankies: Fascists who are directly responsible for the deaths an estimated 26,000,000 people. Deny multiple different genocides ever took place despite evidence to the contrary (Holodomor being the most well known). Antisemites who forced minority ethnic groups to work in forced concentration and labor camps and starved them to death. This Gulag network of death prisons began in 1919 and only ended after Stalin's death in 1953 lasting for a period of 34~ years. Had a secret police known as the Чека (Cheka) whose job it was to suppress political opposition by any means necessary including execution of dissenters and spy on behalf of the State. Torture and execution were common - including that of women and children.
Without mercy, without sparing, we will kill our enemies in scores of hundreds. Let them be thousands, let them drown themselves in their own blood. For the blood of Lenin and Uritsky … let there be floods of blood of the bourgeoisie – more blood, as much as possible..."
You see - the difference between modern day "Communists" and Tankies is that Communists will look at all the terrible atrocities of the USSR and say "That wasn't real Communism." because they want to distance themselves from the atrocities committed. Meanwhile Tankies will say "All of that was according to plan. Some suffering will need to occur during the transitional period to become a true utopian society. If 100,000,000 people must die before a utopia can exist then 100,000,000 people will die. We did not hesitate to shoot thousands of people, and we shall not hesitate, and we shall save the country."
So yes - Tankies are quite literally as bad as Nazis. I'd even argue they're worse if you want to go purely by numbers and how creatively the Cheka were in their ways of torturing people when compared to the Gestapo.
“At Odessa, the Cheka tied White officers to planks and slowly fed them into furnaces or tanks of boiling water; in Kharkiv, scalpings and hand-flayings were commonplace: the skin was peeled off victims’ hands to produce ‘gloves’; the Voronezh Cheka rolled naked people around in barrels studded internally with nails; victims were crucified or stoned to death at Dnipropetrovsk; the Cheka at Kremenchuk impaled members of the clergy and buried alive rebelling peasants; in Orel, water was poured on naked prisoners bound in the winter streets until they became living ice statues; in Kiev, Chinese Cheka detachments placed rats in iron tubes sealed at one end with wire netting and the other placed against the body of a prisoner, with the tubes being heated until the rats gnawed through the victim’s body in an effort to escape.”[4] (Leggett, George (1986); pp 197-198)