Public entities increasingly maintain that the First Amendment permits them to ensure that private speakers’ views are not mistakenly attributed to the government. Consider, for example, Virginia’s efforts to ban the Sons of Confederate Veterans’ display of the Confederate flag logo on state-sponsored specialty license plates. Seeking to remain neutral in the ongoing debate over whether the Confederate flag is a symbol of “hate” or “heritage,” Virginia argued that the state would be wrongly perceived as endorsing the flag if the logo appeared on a state-issued plate adorned by the identifier “VIRGINIA.” The Fourth Circuit was unpersuaded, holding that the logo’s exclusion violated the First Amendment. Such clashes between public and private...