Professional football stadiums are plastered with billboards. Team owners sell naming rights, so that venerable stadium names have been discarded and replaced by corporate brand names.

But the National Football League thinks there are still advertising frontiers to conquer. Like the bodies of news photographers taking pictures at NFL games.

In an announcement that is generating intense outrage from journalist associations and news outlets, the NFL has decreed that photo journalists covering games must wear red vests featuring corporate logos.

Tell the NFL that photo journalists should not be coerced into becoming walking billboards. The NFL's advertising scheme plainly violates core codes of journalistic ethics. News photographers should not have to choose between doing their jobs and upholding the central values of their profession.