At that point you can't even call it karma. It's just damnation. It doesn't matter how hard you try to change or reform, or how much you grow. You always need to be ready to pay any price for any past mistake as many times as it's asked.
Madness string 111481
Most predators will have reason to kill, such as for food, or to protect their young. The horse is one of the few predators to kill purely for sport.