It's one thing for someone who knows and loves me to include me in a discussion, as John sometimes does, but I do not accept someone starting a new post and aiming it at me through the use of a tag where it is on some political topic that they seem to think they can summon me to talk about, especially when they have created the appearance that I am answerable to something because of what I wrote in another place. Talk to me in that other place! By starting a new post about something ugly and tagging me as if it relates to me, you are bullying me. Tagging like this is wrong. If you didn't realize that before, I forgive you for what you did. But you need to think hard about how to use Facebook tags. They can be experienced as hostile. That's what happened to me.
(Cross-posted with Facebook, which I have set to private. I'm not seeking additional friends there.)