One of the things I try to teach my kid is: You are going to have to deal with the fact that there are deeply stupid people all around you, without it affecting your mental health. Those stupid people might be in a position of power over you, they might be other kids in school (or coworkers, later), they might be the president of the country, they might be your neighbor, or they might just be obstacles on the road on your way to work every day. You need to learn how to cope and accept this, gracefully deal with them, and how to protect yourself from their stupidity when it might affect you. It's emotional regulation that smart people need to learn or they go crazy.