I'd recommend the "48 Laws of Power" and the "Art of War". It has been used by courtier and the modern politics. They are very useful wherever you are. The environment may have changed, the players may have changed but the rules are still the same — human nature. The one you need to worry the most are not always the fascist. But wolves wearing the sheep clothing; they are the most dangerous one. They smile in front of you, they let you hear what you need to hear, before you know it, you are only part of their game plan. Unsuspecting person with lack of self-awareness will full prey to this trap. Sadly, it happens so many times not only in politics but everywhere where human is involved: it is within our nature. ☺️