So I was looking at my profile, and noticed that I had lost a couple of reputation point. I didn't remember having recently downvoted any questions or answers. So it got me thinking about other people's reputations.
Generally I don't care about this sort of behaviour. If someone wants to be a vindictive jerk, that's their right. However, others may not have such an attitude, and it got me wondering. How would someone redress a situation where they are being personally targeted due to their beliefs or other factors outside the substance of the question?