Some people will hate you, because that’s all they know. They believe they need it in order to be who they are. They have defined themselves by their hate for someone else. When forgiveness is considered foolish and reconciliation is seen as ridiculous you see how conflict becomes comfortable. Whenever you seek counseling in confusion you end up with some distorted level of hate.
There’s no reasons to argue or really waste much of your time with them. Let them hate, because eventually it will consume them and take over all they do.