There's a way to learn to hate and many religions brainwash people into learning how to hate and it always starts with the little things:
- Learn to hate specific foods. Get fussy. Throw tantrums.
- Learn to hate colours.
- Learn to hate topics.
- Learn to hate people wearing colours that you hate
- Learn to hate other people for liking things that you don't like.
- Learn to hate people in restaurants eating things that you don't like.
- Learn to hate people who are enjoying things that you don't like
That's the general idea… very soon, you will be able to hate anyone you choose to hate because you've forgotten how to like things. Your every waking thought would be about hate and it would consume you. People will use their hate to prejudge others.