In relationships it's personal something said/done to the other
Here it's not personally said to the other; just a public picture on facebook will get you killed
Huge difference
Again also here we should distinguish between:
1) "taking offence of hearsay rules being broken" and more importantly
2) These Muslims worry about what others do; it's none of their business
Strangers and being online one still communicates with actual people who are going through many different experiences in their lives (especially on RF so far I've seen). It really has nothing to do with the strangers (the type of relationship the person has) and whether it's in person or online. If that X person has some serious trauma or something even simpler than that, the insult is no less justified if the other way around. Our physiological feelings react to danger.
When we're threatened from abuse or insult, the neurological part et cetera doesn't tell the difference. It goes by the intensity of the insult not the context of it. That's why working through self-defeating thoughts are good because we can't control our bodies reaction to threat but we can learn to make difference whether it's a threat or not (insult vs harm) since the body can't tell the difference.
The problem is people online think everyone else is "just strangers." Let them deal with it, type of thing. But we are talking to actual people (and I would hope so, right?). So, insults aren't the fault of the victim. We all need to learn how to deal with what our bodies perceive as threats for better health. It would help (at least in person since we can't see people online which intensifies the threat) that the other person be aware of the victim's reactions.
Ideally, that's what I believe a person should do both the victim's interpretation of the insult and the other person's awareness of what he or she said whether they thought of it as an insult or not.
Ideally.
Number 2, though, I wasn't referring to that. I'd have to re-read the OP. I was just referring to insults in general and how people react to them (and in my opinion should react in a healthy way both the person giving the insult and the person experiencing the affects of it)