Disagree all you want. It doesn't change the fact that they don't have to let your post remain. Your right to speak your mind is not being prohibited, only your ability to post your thoughts on their page.I disagree with that.
Walk to the local courthouse and tack a diatribe on the courthouse door and then try to tell them that you have a right to post your opinions there when they try to remove it. See how far that gets you.
The First Amendment does NOT mean - and never has meant - that you can post your thoughts or criticisms wherever you please.
I'll wait for you to cite the case law that says that ...My public opinion on a government ran Facebook is protected under free speech.
Well, then, start your own Facebook Page and call it "I Hate Thunderbirds," or some such thing. You can speak your mind elsewhere - you just can't do it there, apparently.My post was not bad and was within their rules for posting. I think such rules are bs anyway, however I made sure not to break those rules. They deleted both my post, then blocked me from commenting on future post.
And, as a note, many government entities have Facebook pages. At my agency we remove posts we don't like, too. You can criticize us all you want, you just don't get to do it on our web page. And while your posting was not, apparently, critical, it was also apparently not what the site managers wanted to see on it. They have that right.