I think this is a situation where scale matters a great deal, to determine if harm was done or not. This might be a communication mismatch, but I don't think anger is only the result of pain. Frustration comes to mind, and calling frustration an injury, even a minor one, seems wrong. For example, if someone dose something to frustrate you in an MMO, like the classic port to Ironforge- you are subjecting someone to a minor inconvenience for your amusement. Basically a "Haha, I tricked you!" Kinda rude? Yes. A major infraction against the social contract? No. You may unintentionally harm someone that way, but it would be similar to accidentally triggering someone irl. Bad all around, but you can't be accused of malice. On the other end of the spectrum, there is behavior like spamming someone with pictures of dead animals after they posted about mourning a pet. The expected outcome there is to inflict emotional suffering on the target, and I feel confident calling that harm. Anon's actions are a mix. I didn't see the politics thread, but that sounded like an attempt to set off a bunch of people with anxiety disorders, which is unpleasant enough I'd call it harm. This thread is a little more complicated, to me it looks like they are engaging in a pretty straightforward way, but with a typing quirk. But presumably they know said typing quirk will remind people of the politics thread. Do they have a responsibility to change how they engage because of that?