@LiberalLibrarian I didn't think that a person got any notification that someone had blocked them. Just suddenly they stop hearing you, and no way for you to tell. Unless of course they make a loud dramatic declaration that you're an unworthy person and they're blocking you as you deserve, and then they block you. Which sounds less like the actions of a genuinely offended person of different opinions, and more like the actions of a troll.
@elbutterfield @walterbays If you click on a profile and can't see their posts nor follow them, then they have you blocked.