The statement 'Higher Ground: Stevie Wonder sound check at the Democratic National Convention' does not constitute public discourse. It appears to be a promotional or informational post about an event involving a public figure, Stevie Wonder, at a political convention. The link to 'x.com' suggests it might be directing users to a social media platform or website for further information or engagement, but without additional context or substantive engagement with public issues, policies, or societal concerns, it does not meet the criteria for public discourse.