The statement 'Right sorry… deleting…' in response to '@JanetFr27049010: @mtaibbi No weed for alcoholics. NONE.' does not constitute public discourse. The original tweet by @JanetFr27049010 is an opinion on a specific issue, but the response 'Right sorry… deleting…' is a personal reaction and does not engage substantively with public issues, debates, or discussions that contribute to civic dialogue.