The statement 'We WIN by engaging the fight. ✊' in the context of promoting a virtual rally for a political figure does not constitute substantive engagement in public discourse. It is a promotional activity related to a public figure's campaign event. The statement itself is a call to action to support a political campaign but does not directly address societal issues, policies, or public concerns in a substantive way. The tone is motivational, and the intent is to rally support for a political campaign.