Are sandwich boards cruel and unusual?

So, we’ve always known that walking around with a sandwich board is about as low as you can get in advertising (though the guys who hand out fliers for strip clubs are pretty low, too). Now, it seems, the job from which many out-of-work actors earn a paycheck has become a form of punishment. Apparently, the Supreme Court has decided that a man convicted of stealing mail can be compelled to wear a sandwich board that reads, “I have stolen mail.