I mean ya they might biologically be human, but mentally whatever is going on be it something broken when they were born, or just something that developed over time due to their twisted worldview is fucked up in there. They have no empathy, no compassion, no morals. If Aliens showed up i would rush to meet one so i could try to explain that we all arent like these monsters and not to judge us as a species based on their evil. In reality most of the like base of support are just brainwashed people who dont really know what we as leftists know, but still have empathy and compassion. Thats even true for a good chunk of like fascist supporters too. They could be fixed if you just like got them to listen and explained things to them. Altho that would be hard. But many of these leaders and more committed libs know everything we know and actively choose to be evil. Those people arent savable. The only cure for that is to imprison them, fight them, and make sure they have no power in this world to hurt others with.