I’m worldbuilding a fictional universe centred on communist societies, and I want to write the socialism/communism aspects as accurately as possible.

So if a country is currently monarchist, fascist, imperialist, etc but with a socialist revolution is underway, there is certainly going to be extreme resistance from the existing State. In a situation like this, do you think the socialist revolution should do things that help them, but would be considered unethical in war, aka “war crimes”? For example, things like poisoning key figures of the existing State, using “cruel weapons”, torture, etc. Especially if the existing State is already acting in that way? Would this contradict socialist philosophy or morality? What if the revolution is in danger of being extinguished by the State?