The statement 'Congrats @celtics! 4 more to go.' is a congratulatory message directed at the Boston Celtics basketball team, celebrating their victory and encouraging them to win four more games, presumably to win a championship. The tone is positive and supportive, and the intent is to show encouragement and support for the team. The conversation and image are related to a sports event and do not engage in substantive public issues or debates, thus it does not constitute public discourse.