It means your harassers can reply to your posts with all kinds of things meant to change other reader's perceptions of you, while you, the victim, are completel

It means your harassers can reply to your posts with all kinds of things meant to change other reader's perceptions of you, while you, the victim, are completely unaware of why your circle keeps shrinking. Otherwise you could block the aggressor outright, which disallows this kind of activity. Muting is not the same, even if some people mistakenly believe they are. Muting is what you do to annoying users that always try to be the center of attention, even though they are so extremely boring or whatever. They can still participate in threads... you just won't see their constant floods. They aren't harming you. They're just an eyesore. Blocking is what you do to someone you don't want involved in any aspect of your life, and especially in your active conversations. Harassers, exes, etc.