The statement 'Joining @CBSMornings at 7:30pm ET' is a promotional activity related to a public figure or event. It does not substantively address public issues, policies, or public concerns and therefore does not constitute public discourse.
The statement 'Joining @CBSMornings at 7:30pm ET' is a promotional activity related to a public figure or event. It does not substantively address public issues, policies, or public concerns and therefore does not constitute public discourse.