One way to identify your prejudices is to think of any group with which you identify – city dweller, country, suburbanite, athlete, theater or certain type of music lover, ethnic group, Republican, Democrat and so on. Then, identify any groups viewed as different from or in actual opposition to your group.
School is a great laboratory for this. The cliques even have names: The jocks, the theater kids, the dropouts, the brainiacs, the popular kids,
Trust me, if any group is seen as opposite or very different from your group, you will have been given some misinformation about them. Catholics have been given misinformation about Protestants and Protestants misinformation about Catholics. Young misunderstand old and old misunderstand young. Smokers think nasty thoughts about non-smokers and non-smokers say negative things about smokers.
What jokes do people tell about a neighboring state to yours? If you live in Minnesota, you know the Wisconsin jokes, but you don’t necessarily know what they say in Montana about people who live in Idaho. It’s almost like sibling rivalry. When you were growing up, you might have mocked your brother or sister because they were in close proximity and you’re were defining yourself against them.
Groups define themselves in part by who they are not. Nothing wrong with that. It’s just when we start to rank who’s cool (us) and who’s not (them) that we get in trouble.
Our prejudices can be endless and take consistent awareness to weed them out.