What is someone who treats another person in a cruel, violent, or unfair way called?

Player #53553731, As a Survivor, I appreciate this sentiment.

Abusers are the cancer of humanity

fergiethefrog, I'm so sorry that you were abused. I was abused when I was a little girl and I still 😢

And most women are the ones getting abused. That’s where you take yourself out of the situation and move on.

Girl is in picture is 🥰