One of the few pop-superstition, to call it something, or clearly irrational belief, or "intuition-based" decision making, that I consciously allow myself is prejudging people as "probably a bad person" based on their face.
I cannot explain how that works or give an objective list of traits that make a "bad person face", but I am very certain that I produce very accurate results.
As a sample of a well known international political figures who to me has one of the most evil, most rotten person face, I can point at Nigel Farage. Doesn't matter if some of the stuff he may say sometimes resonates with me, or not. I'm talking about human quality. I would never trust someone with that face.