I have hated in the past - usually someone who has broken my heart pretty badly, or lied or betrayed me. Honestly? Hatred needs far too much energy. You have to maintain the anger, can't process, grow through it, can't feel compassion because you will equate it with weakness and the person undeserving, don't feel better, continue to feel angry, bitter and miserable.
I found that it is far better to just let go, and move on. I had someone who hurt me pretty badly, and they came back, finally, and said, "Yeah, well, I know you are pretty angry. I treated you pretty badly. I know what you must think..." It was barely an apology. I said, "I don't think of you. Ever." And that was that.
I was at peace with it, forgave him, but moved on.
Hatred is far too consuming.