We talk about moral viruses, which are simply inaccurate or incorrect beliefs about the world or oneself. Almost all viruses stem from fear-based beliefs, which are usually irrational or inaccurate fears, such as the fear of an ethnic group.
Leaders have their own set of moral viruses. One that’s lethal relates to trust–the idea that you can’t trust people until they’ve proved they’re worthy. That’s a vicious circle. If you’re looking for ways in which they’re untrustworthy, you’ll find those and a lack of trust will be perpetuated. Another virus is a belief that there’s a hierarchy of value for people. The people who don’t have that virus tend to know the name of the night watchman and the janitor, and chat with them about baseball scores.