The Supreme Court declined to hear a case challenging North Carolina’s decision to stop issuing license plates bearing the Confederate flag

the Sons of Confederate Veterans sued North Carolina, claiming in part that the decision curbed the speech of private individuals. A lower court ruled that the license plates represent government speech, since the state controls the messages on the plates.

https://www.usatoday.com/story/news/politics/2023/06/12/supreme-court-confederate-flag-license-plates/70314584007