You cannot make a judgement yourself on how much pain a victim feels, but you need to do right in spite of your feelings of like or dislike of the victim and despite the corruption of suffering old pains, or the good or bad intent you may have to gain from the suffering of the victim.
Do not walk in another person’s moccasins until you have lived their life. It is hunger or thirst from the other that you do not feel or see. When you, in your arrogance, have never suffered you do not know how bitter their cup is until your day to taste it comes.