WASHINGTON, D.C. – In a dispute over a proposed Confederate battle flag license plate, the Supreme Court struggled Monday to balance worries about government censorship and concerns that offensive messages could, at worst, incite violence.

Nearly 150 years after the end of the Civil War, the justices heard arguments in a case over Texas’ refusal to issue a license plate bearing the battle flag. Nine other states allow drivers to display plates with the flag, which remains both a potent image of heritage and a racially charged symbol of repression.