Why the Supreme Court protects offensive trademarks but not Texas plates with Confederate flag

"When Alito struck down efforts to equate the Oregon case with the one in Texas, he highlighted three points:

First, license plates have long been used by states to convey messages. Second, license plates are usually identified with the state because they are considered a form of government ID, one that is manufactured by the state and generally designed by the state. Third, Texas "maintained direct control" of the messages in its plates.

"None of these factors are present in this case," Alito wrote in The Slants opinion."