Here’s something I’m going to start thinking about. Could one say that the First Amendment right to petition is implicated when a public official excludes someone from their social media account (say Twitter)?
The petition right is narrower than a free speech right, in that petitions are directed only to public officials. If someone is excluded from petitioning an official via an important communications channel, is that constitutional so long as there is some other means of doing so that is not too burdensome? My hunch is that the history of the right of petition in English law can tell us a lot about this, but we’ll see.