Eric Arthur Blair, aka George Orwell, thought that socialism could be separated from its tendency towards totalarianism. We have seen that it can’t.
The very people that think they know better than others tend to gravitate toward positions of power. The more power, the more it attracts the self-centered egomaniac who has no problem being a dictator. This sort of person becomes enraged when the populace doesn’t bow to his will and implement his “perfect” plan. The mass killings then start.
Orwell was brilliant. I would proffer that deep down in his soul, he knew socialism could not be separated from its tendency towards totalitarianism, but to his dying day, he fervently clung to the hope that it might be.