How to turn anger in love

[Loki]

Thank you all for the answers. It is hard to turn the other cheek. My anger appears usually in situations where I witness abuse rather than when I am involved directly. And it is deep calm type of anger where the only effect for outside world is I speak slower and more sarcastic towards the abuser. Seeing the abuser as me I cannot, and I hate myself for being angry and I hate the other for abusing and I feel pity for the victim and I feel the urge to take his side and attack the abuser. But anger is not a good feeling even when you are a calm person.
I can love a dog attacking me I love less a dog attacking other dog, but I cannot love a human abusing another human.