At the same time it is in an odd position because it was also very early on, before it was widely known what was happening with the Soviet government, adopted by anti-authoritarian socialist and communist groups, some of whose members risked their life against Stalin, and it was later knowingly adopted by groups opposed to the Soviet regime, such as e.g. the Trotskyist 4th International, as well.
This makes it quite different to symbols that are singularly attached to totalitarian governments and movements, in that it also has nearly as long history of use by their opponents.
Personally I think it's unhelpful to use it, but I also understand those who use it as an attempt to "reclaim" socialist imagery that has been relentlessly abused.
I have seen people here advocating anti-authoritarian socialist ideologies of the types that would get you executed by regimes like those of Mao and Stalin.