@LoLyeah I can see what you're saying, but the author was specifically criticizing socialism. In general, I think you're right that people with varying ideologies can succumb to malice or greed. I'm not going to sweat this manga's historical misconceptions too much tho because it's more...
The problem with the author's conception of socialism is the presumption that socialism "failed" on its own. But, democratically-elected, socialist leaders around the world like Salvador Allende in Chile, Patrice Lumumba in Democratic Republic of the Congo, and Mohammad Mosaddegh in Iran were...