Dave   FWIW, I agree that there's a difference between triggering PTSD and evoking negative feelings.  I also agree that if my community has a mechanism whereby people can request the former be avoided and have that request respected, some people in my community will use that mechanism to avoid the latter, and some people will use that mechanism to simply control other people's speech because they like being in control.  If it turns out that I can't perfectly distinguish among those groups, and I care about the differences between them, it eventually becomes necessary to decide what error I want to make... whom I want to give the benefit of the doubt. Would I rather reject a request from the first group because I've mis-filed them as the second? Or would I rather accede to a request from the second group because I've mis-filed them as the first? Etc.  Natch, it depends on the situation, and even in a given situation reasonable people can disagree on this. I have my answers, which don't necessarily matter to anyone but me.  But treating everyone like the third group in the absence of proof that they're in the first group, for example, is not an approach I endorse.
{}