Aargh!!! (Please take a deep breath and let it out slowly)
It's OK to feel hatred towards someone. Everyone feels hatred when they believe that someone else may be to "blame" for harming someone or some living thing. Feeling hatred from time to time is part of being human. Most people in your type of situation tend to feel hatred too so you're certainly not alone. I want you to go ahead and feel that hatred for as long as you want to while you to continue to chat with me. Please don’t do anything about your situation while you’re feeling hatred other than continue to chat with me. If you decide to stop chatting with me, please count to 10 or something before you deal with your situation.
Hate is a natural instinct. In the wild, shame is the recognition that the patterns of your life are causing a source of your life to dry up (or become so polluted that it can't support your life). For example, if you began to realize that your habit of defecating in the watering hole that you rely on for fresh water was making the water unfit to support your life (and the lives of others like you), you would feel ashamed of yourself. But if someone else is doing something truly shameful which is causing harm to your or to someone else, then it's perfectly natural for you to hate them. Why? Because they are doing something that is killing you or someone you love! Hate gives you the motivation to remove that person from your world so they can't harm you anymore.
In the modern world, being hateful is essentially the same thing but on a more complex level. If you were a nomad and some guy kept following you and killing your sheep in the night, you'd probably have to maim him or kill him to stop him from following you and causing you to starve! If you lived in a tribe settled in a valley and someone in the tribe kept harming other people, you'd have to imprison him or shun him (send him away from the tribe). In the modern world, we have police, courts, and prisons for people who keep doing shameful things. Rather than kill or shun them, as a society we exercise as much love as we can by locking them up and attempting to rehabilitate them. Unfortunately we're not really very good at the rehabilitation part yet. We're loving enough to try to rehabilitate them, but most of us don't understand how to be unconditionally loving. Unconditional love is the only known "cure" for truly rehabilitating people who do shameful things.
The major problem with hate is that it's a short term solution. Hate is essentially a negative motivator. It guides you to force others to stop doing things that will result in harm to yourself and/or others. But hating a person doesn't help them learn how to give up their shameful ways and become people who are supportive of life. That takes unconditional love. Also shameful people tend to raise shameful children which just perpetuates the problem. In order to help someone (and the generation they're raising) to change, you need to love the person even though they've done something shameful. Loving the person doesn't mean you let them walk all over you. Quite the contrary. Unconditional love means you also love yourself. So you set clear boundaries between yourself and others and you enforce those boundaries in a loving way.
If/when someone crosses your clear boundaries, it's best to respond in the most loving way you can. Where possible, do your best to avoid confrontation in the first place. If that's not appropriate (and sometimes conflict is appropriate), try to deflect their attempts to cross your boundaries and/or call for backup (call a loved one or the police to help you). If you can't deflect them, then it gets down to you or them so you may need to hurt them somehow (but not permanently) to get them to retreat to their side of your clear boundary. If you're in a life or death situation, you may need to maim them so you can run away and call for backup (get help). As a last resort in a life or death situation, you may need to kill them in order to keep them from killing others. But all of these decisions can be made from within the context of unconditional love. You are doing your best to preserve life. And in life or death situations, it's appropriate to take a triage approach to save innocent lives by maiming or killing the person doing the shameful thing. Unconditional love nurtures, supports, and protects life.
Your feelings of hatred will certainly lift when you choose to be unconditionally loving. Or if you still choose to hate the person, the feelings should lift if the person changes their ways, stops harming you and/or others, and does the best they can to clean up the situation. People who feel hatred show that they are wise when they contact a loved one and share mutual love and support so they can let go of the hatred and get on with their lives. But many people are "stuck" and feel hatred much of the time. People who feel hateful, depressed, or anxious much of the time show that they are wise when they seek professional help. Being stuck in hatred often means that people are unable to let go of the past and/or realize that continuing to hate is not getting them what they want out of life.
In order to make truly positive changes in yourself, it's better to be motivated by love rather than hate. I encourage you to explore the idea of embracing love as your motivating force rather than hate. You'll be glad you did!
But as always, the choice about where you go from here is up to you. So what would you like to chat about now?