I still sometimes try to google the people who tortured me the year we were in the States, just to ask if they remember me and if so, have they any regrets. I never find them.
On the other hand I had terrible guilt from that year for teasing one kid once, and a few years ago they found me, and I was able to apologize profusely, which made me feel a lot better. Tirns out they didn't even remember the incident!