I definitely hope for people who have been bad to me ( I don't want to hate anybody, it is bad for me and my karma!!!LOL) first for their own well being and the peace of the people around them.
Now, some people can change, some people can't.
I have a very personal situation where relatives tried to destroy my family very hard and for a very long time, I let them go forgave them but they seem to not recognize they did anything wrong and hold a grudge... I am very sorry for them, their kids and anybody around them that they think it is right to lie, gossip, manipulate the way they did. Now I may be wrong, they may be sorry but be too proud to apologize or change. I believe in Karma, I believe in God, so, I keep on going happy to have avoided changing into as evil as they were to defend myself and my kids and ask for blessings for them. Life gets tough for evil people, the promises come to a dead end...hope they won't wake up too late.