There are a lot of it going on here on EP and I have just reported someone who did that to me.
I have never thought I would report someone. I have never flagged anything and I have used the thumbs down only once. When I see a group I don't like or disagree with, I simply leave because I believe in freedom of speech and having different opinions. Likewise, when I state my own opinion, I try to be as level headed as possible and not condemn the party that I disgaree with.
So it disturbs me a lot when a person who disagrees with me took the time to personally attack me by posting a comment on a story I wrote here. I spent a couple of days thinking if I should report the person or if it was within his/her right to say what s/he said on the comment. I questioned my own motivation i.e. if I wanted to report only because I got hurt.
In the end I did because later I found out that this person commented on other stories from the same group, stating disagreement but without the vehemence that was apparent in the comment on my story. (The comment has since been deleted and I am glad nobody else has to see it. Thank you, Arsineh and the rest of the EP support staff.)
I didn't know nor have I ever come across this person before. If somehow I have hurt him/her, I wish s/he would come to me so I could apologize. But if what happened is based solely because s/he didn't like what I had to say then I think I've done the right thing.